Starter Packs
we are hiring
FAQ
Shipping times
base metal jump rings Here are stats and recommended weaves for the Base Metal rings. We're working on filling in the gaps on the chart. In the meantime, if you need stats for a particular ring size, just let us know. NOTE: Different gauge systems are used for different metals, so H18 SILV does NOT equal H18 in base metals. (Learn more in the Ring Sizes article in FAQ.)
Ring Names:
Letter = Inner Diameter
Number = Wire Gauge
Wire Gauges Conversions
 24g = 0.5 mm (0.021")
22g = 0.6 mm (0.025")
20g ALUM = 0.76 mm (0.03")
20g all other metals = 0.8 mm (0.032")
18g ALUM = 1.15 mm (0.045")
18g all other metals = 1.22 mm (0.048")
16g = 1.6 mm (0.062")
Base Metal Jump Ring
Sample Sheet (PDF)

Please note! Aspect ratios listed in parentheses are older and may or may not match current stats. Certain ARs may change, as we move toward standardizing our sizes. Our goal is for metals within a size to have as close an AR as possible to one another, despite springback and slightly different wire gauges for different metals. (For more, please see the March 25 entry in the supplies updates section.) The 20g ALUM is an exception; it will always have higher ARs than other 20g, because the wire diameter is slightly smaller.

A22 Copper Rings: inner diam. 5/64" (1.98mm), gauge 22 SWG

A22

22ga 5/64
22ga 2.0mm		 Metal Aspect Ratio Recommended uses
Jewelry Brass 3.1
  • Euro 4-1
  • Turkish Round
  • 2-connector Byzantine
Bronze 3.1
Copper 3.3
Stainless Steel 3.4

B20 Copper Rings: inner diam. 3/32" (2.38mm), gauge 20 SWG

B20

20g 3/32
20g 2.4mm		 Metal Aspect Ratio Recommended uses
Aluminum 3.0
  • Doubled Japanese 6-1 (12-2), with F20 — Note that this is tight in copper and jewelry brass; it works well for 2-rows and japanese flowers (for wider pieces, use B22 & F20, or B20 & G20)
  • Jens Pind for some metals —possible with the steel rings, but the AR is just a tad too loose, so with time, some of the rings pop out of place. Jens Pind is very stiff with the Copper rings.
  • These rings also come in handy for jewelry repair that includes small chains or jump rings.
Jewelry Brass 2.9
Bronze 3.1
Copper 3.1
Stainless Steel 3.1

B22 Copper Rings: inner diam. 3/32" (2.38mm), gauge 22 SWG

B22

22g 3/32
22g 2.4 mm		 Metal Aspect Ratio Recommended uses
Jewelry Brass (3.9)
  • Euro 4-1
  • Japanese 12-2 (with F20 or G20 or H20)
    Note that aluminum is weak in this gauge, and so we've discontinued this gauge in Aluminum. Use Stainless Steel (Stainless Steel) instead.
Bronze (4.1)
Copper 3.8
Stainless Steel 4.1

C20 Copper Rings: inner diam. 7/64" (2.78mm), gauge 20 SWG

C20

20g 7/64
20g 2.8 mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.0
  • Turkish Round - absolutely delicious in this size!
  • European 4-1, slightly snug
  • Byzantine (2 connectors)
    More uses and measurements to come.
Jewelry Brass --
Bronze 3.6
Copper 3.5
Stainless Steel 3.6

D18 Copper Rings: inner diam. 1/8" (3.17mm), gauge 18 SWG

D18

18g 1/8
18g 3.2mm		 Metal Aspect Ratio Recommended uses
Aluminum 2.8
    These rings work great at clasp points. The inner diameter is small, but the AR is low, meaning they are surprizingly strong. The kerf is large on the steel rings, so they are very hard to close.

    Jens Pind is possible, but tight. (With copper rings, the weave is not flexible).
Jewelry Brass 2.7
Bronze 2.8
Copper (2.7)
Stainless Steel 2.8

D20 Copper Rings: inner diam. 1/8" (3.17mm), gauge 20 SWG

D20
20g 1/8
20g 3.2mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.4
  • Euro 4-1
  • Box (flat)
  • Half Persian 3-1
  • Byzantine (3 connectors)
  • Open Round -- works with Stainless Steel, but may be too tight with other materials, especially Bronze and Copper
  • Mobius/Wiggle
  • Japanese 6-1 (with N16)
  • Japanese 12-2 (with L18) -- also works with other 18g, such as J18 and H18
  • Dragonscale (with I20)
  • See D20 Weave Ideas for images of some of these weaves, plus more ideas to inspire you!
Jewelry Brass 4.1
Bronze (4.2)
Copper 4.1
Stainless Steel 4.0

D22 Copper Rings: inner diam. 1/8" (3.17mm), gauge 22 SWG

D22

22g 1/8
22g 3.2 mm		 Metal Aspect Ratio Recommended uses
Jewelry Brass (5.6)
  • Euro 6-1
  • Half Persian 4-1
  • Full Persian 6-1
  • Double Spiral
Bronze (5.3)
Copper (5.3)
Stainless Steel 5.9

E18 Copper Rings: inner diam. 9/64" (3.57mm), gauge 18 SWG

E18

18g 9/64
18g 3.6 mm		 Metal Aspect Ratio Recommended uses
Aluminum 3.1
  • Very snug European 4-1 (might be too tight in copper)
  • Jens Pind (possibly too loose in steel)
    This ring has a low aspect ratio, meaning most weaves won't be possible. However, these rings are great for tiny rings at clasp points.
Jewelry Brass 3.1
Bronze 3.0
Copper 3.1
Stainless Steel 3.2

E20 Copper Rings: inner diam. 9/64" (3.57mm), gauge 20 SWG

E20

20g 9/64
20g 3.6 mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.3
  • Celtic Visions, with I18 (tested in Aluminum, but not other metals yet)
  • Box Weave, particularly in ALUM
  • Open Round
    More uses and measurements to come.
Jewelry Brass 4.6
Bronze 4.7
Copper 4.7
Stainless Steel 4.9

F18 Copper Rings: inner diam. 5/32" (3.97mm), gauge 18 SWG

F18

18g 5/32
18g 4.0mm		 Metal Aspect Ratio Recommended uses
Aluminum 3.6
  • Byzantine (2 connectors) - except Copper. (use G18 in COPP)
  • Turkish Round — extremely tight in copper; try G18 instead
  • Euro 4-1, sleek and snug
Jewelry Brass 3.4
Bronze 3.4
Copper 3.7
Stainless Steel 3.4

F20 Copper Rings: inner diam. 5/32" (3.97mm), gauge 20 SWG

F20

20g 5/32
20g 4.0 mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.4
  • Euro 6-1
  • Box
  • Helm Chain (with L18)
  • Half Persian 4-1
  • Full Persian 6-in-1 -- Very tight, especially in copper. Best to separate 3 to 6 units of FP6-1 with beads or large spacer jump rings.
  • Japanese 12-2 (with B20 in Aluminum and Bronze, or B22 in Copper and Jewelry Brass)
  • Dragonscale (with K18)
  • Jens Pind 5 (copper and steel ONLY...and note this is JPL5, not regular Jens PInd!)
Jewelry Brass 5.1
Bronze 5.1
Copper 5.1
Stainless Steel 5.2

G16 Copper Rings: inner diam. 11/64" (4.37mm), gauge 16 SWG

G16

16g 11/64
16g 4.4 mm		 Metal Aspect Ratio Recommended uses
Aluminum 2.9
  • A great size for Jens Pind -- but keep in mind the AR is just about the minimum allowable size, so it'll be a tight squeeze
  • At clasp points for heavy gauge pieces
Jewelry Brass 2.9
Bronze 2.9
Copper 2.9
Stainless Steel --

G18 Copper Rings: inner diam. 11/64" (4.37mm), gauge 18 SWG

G18

18g 11/64
18g 4.4 mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.0
  • Turkish Round
  • European 4-in-1
  • Byzantine (2 connectors) - works great with copper
Jewelry Brass 3.8
Bronze 3.9
Copper 3.9
Stainless Steel 3.8

G20 Copper Rings: inner diam. 11/64" (4.37mm), gauge 20 SWG

G20

20g 11/64
20g 4.4 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.2
  • European 6-in-1
  • Full Persian
  • Japanese 12-2 (with B20)
Jewelry Brass 5.8
Bronze 5.7
Copper 5.6
Stainless Steel 5.6

H16 Copper Rings: inner diam. 3/16" (4.76mm), gauge 16 SWG

H16

16g 3/16
16g 4.8mm		 Metal Aspect Ratio Recommended uses
Aluminum 3.2
  • Jens Pind
  • At clasp points for heavy gauge pieces
Jewelry Brass 3.2
Bronze 3.2
Copper 3.1
Stainless Steel 3.1

H18 Copper Rings: inner diam. 3/16" (4.76mm), gauge 18 SWG

H18

18g 3/16
18g 4.8mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.1
  • Euro 4-1
  • Half Persian 3-1
  • Byzantine (3 connectors)
  • Box weave (flattened)
  • Gridlock Byzantine (a bit loose, but I like the weave this way, too)
  • Olivia Chain
  • Dragonscale (with N18 Aluminum, Jewelry Brass, Stainless Steel or with O18 Copper)
  • Japanese 12-in-2 (with D20 connectors)
Jewelry Brass 4.1
Bronze 4.0
Copper 4.1
Stainless Steel 4.2

H20 Copper Rings: inner diam. 3/16" (4.76mm), gauge 20 SWG

H20

20g 3/16
20g 4.8 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.9
  • Euro 6-1
  • Euro 8-1, sleek and snug
Jewelry Brass 6.5
Bronze (6.2)
Copper 6.1
Stainless Steel 6.3

I16 Copper Rings: inner diam. 13/64" (5.16mm), gauge 16 SWG

I16
16ga 3/64"
16ga 5.16mm

 Metal Aspect Ratio Recommended uses
Aluminum 3.2  
  • Euro 4-1
  • Jens Pind 3
  • Byzantine (2 connectors)
  • Flowers
Jewelry Brass 3.4
Bronze 3.4
Copper 3.4
Stainless Steel --

I18 Copper Rings: inner diam. 13/64" (5.16mm), gauge 18 SWG

I18

18g 13/64
18g 5.2mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.6
  • Open Round - bracelet
  • Use as center rings for Japanese Wave (along with F18 and L18 on edges, and D20 connectors— see Sept 2006 newsletter)
  • Celtic Visions, with E20 (tested in Aluminum, but not other metals yet)
  • Barrel Weave
Jewelry Brass 4.5
Bronze --
Copper 4.4
Stainless Steel --

I20 Copper Rings: inner diam. 13/64" (5.16mm), gauge 20 SWG

I20

20g 13/64
20g 5.2 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.6
  • Euro 8-1
  • Jacob's DNA ladder (Captive Inverted Round) - with 2 F18s captive in the center. Use Stainless Steel or Bronze I20s for strength.
  • With D20 for Dragonscale, Helm Chain and Conundrum
Jewelry Brass 6.7
Bronze 6.8
Copper 6.6
Stainless Steel 6.9

J16 Copper Rings: inner diam. 7/32" (5.56mm), gauge 16 SWG

J16

16g 7/32
16g 5.6mm		 Metal Aspect Ratio Recommended uses
Aluminum 3.7
  • Byzantine (2 connectors)
  • Turkish Round (thick)
  • Euro 4-1
  • Byzantine Ladder (connect the sides with H18)
Jewelry Brass 3.7
Bronze (3.9)
Copper 3.7
Stainless Steel 3.6

J18 Copper Rings: inner diam. 7/32" (5.56mm), gauge 18 SWG

J18

18g 7/32
18g 5.6mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.1
  • Euro 4-1 (a little loose, but works well in Stainless Steel, especially for a belt)
  • Euro 6-1
  • Box Weave, ideal size
  • 3-in-3
  • Japanese Ball (10-in-3)
  • Double Spiral (just about as tight as it can go yet still be flexible enough for a bracelet)
  • Captive Inverted Round (with one captive ring every other unit), very flexible
Jewelry Brass 5.0
Bronze 4.9
Copper (4.7)
Stainless Steel 4.9

J20 Copper Rings: inner diam. 7/32" (5.56mm), gauge 20 SWG

J20

20g 7/32
20g 5.6 mm		 Metal Aspect Ratio Recommended uses
Aluminum 7.4
  • Turkish Orbital
  • Ice Wyrm and Fire Wyrm
Jewelry Brass 7.3
Bronze 7.3
Copper --
Stainless Steel 7.5

K16 Copper Rings: inner diam. 15/64" (5.95mm), gauge 16 SWG

K16

16g 15/64
16g 6.0 mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.0
  • with F19 EC for Japanese Cross (as seen in Chained)
  • Euro 4-in-1
Jewelry Brass 4.0
Bronze 4.1
Copper 4.0
Stainless Steel 4.0

K18 Copper Rings: inner diam. 15/64" (5.95mm), gauge 18 SWG

K18

18g 15/64
18g 6.0 mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.5
  • Box Chain — an ideal ring size for Box
  • Helm Chain (with F20) in Stainless Steel — though it works in other metal combinations, it is generally too stiff
  • Dragonscale (with F20)
  • Full Persian
  • Perfect for Half Persian 4-in-1
  • Double Spiral
  • Captive Inverted Round (use one captive ring) CIR is generally stiff, and though there's a tad bit of movement with CIR in this size, it is far too stiff for jewelry applications.
  • Oval weave (as seen on Spider's DVD Vol I)
Jewelry Brass 5.2
Bronze 5.0
Copper 5.3
Stainless Steel 5.2

L14 Copper Rings: inner diam. 1/4" (6.35mm), gauge 14 SWG

L14

14g 1/4
14g 6.4mm		 Metal Measurements
(after springback)		 Aspect Ratio Recommended uses
Inner
Diameter		 Wire
Diameter
Aluminum " 0.08"
  • uses go here
  • more uses go here
mm 2.0 mm
BRSS " 0.08" --
mm 2.0 mm
Bronze " 0.08" --
mm 2.0 mm
Copper " 0.08" --
mm 2.0 mm
Stainless Steel " 0.08" --
mm 2.0 mm

L16 Copper Rings: inner diam. 1/4" (6.35mm), gauge 16 SWG

L16

16g 1/4
16g 6.4mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.2
  • Euro 4-1
  • Byzantine (3 connectors)
  • Half Persian 3-1
  • Wiggle
  • With T16 for Helm Chain, Rondo à la Byzantine or Dragonscale
Jewelry Brass 4.1
Bronze (4.4)
Copper 4.2
Stainless Steel 4.2

L18 Copper Rings: inner diam. 1/4" (6.35mm), gauge 18 SWG

L18

18g 1/4
18g 6.4mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.7
  • Euro 6-1
  • Full Persian 6-1
  • Half Persian 4-1
  • Flowers (connect 4-petal L18 flowers with single H18)
  • Double Spiral
  • Japanese 12-2 (with D20)
  • Captive Inverted Round (with one captive ring), flexible enough for a necklace, but possibly not for a bracelet
  • Helm Chain (with F20)
Jewelry Brass 5.6
Bronze 5.6
Copper 5.8
Stainless Steel 5.7

M16 Copper Rings: inner diam. 17/64" (6.75mm), gauge 16 SWG

M16

18g 17/64
18g 6.7 mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.5
  • Box
  • Byzantine (3 connectors)
  • Open Round
  • Euro 4-1
  • Barrel
  • Rosettes
Jewelry Brass 4.5
Bronze 4.5
Copper 4.5
Stainless Steel 4.6

M18 Copper Rings: inner diam. 17/64" (6.75mm), gauge 18 SWG

M18

18g 17/64
18g 6.7 mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.9
  • uses to come
Jewelry Brass 5.9
Bronze 5.9
Copper 5.9
Stainless Steel 6.1

N16 Copper Rings: inner diam. 9/32" (7.14mm), gauge 16 SWG

N16

16g 9/32
16g 7.1mm		 Metal Aspect Ratio Recommended uses
Aluminum 4.8
  • Celtic Visions (with H18)
Jewelry Brass 4.7
Bronze 4.8
Copper 4.9
Stainless Steel 4.8

N18 Copper Rings: inner diam. 9/32" (7.14mm), gauge 18 SWG

N18

18g 9/32
18g 7.1 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.2
  • European 8-in-1 (may be tight in copper--use O18 instead)
  • Dragonscale (with H18) - works great with anodized aluminum for the H18 rings (for now, use O18 in copper)
  • Helm Chain (with H18)
  • Full Persian
Jewelry Brass 6.4
Bronze 6.1
Copper 6.5
Stainless Steel 6.2

O16 Copper Rings: inner diam. 19/64" (7.54mm), gauge 16 SWG

O16

18ga 19/64
18ga 7.5 mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.0
  • uses to come
Jewelry Brass 5.1
Bronze 5.1
Copper 5.2
Stainless Steel 5.2

O18 Copper Rings: inner diam. 19/64" (7.54mm), gauge 18 SWG

O18

18g 19/64
18g 7.5 mm		 Metal Aspect Ratio Recommended uses
Aluminum 7.0
  • European 8-in-1
  • Copper only: Helm Chain (with H18)


    • Measurements and more uses to come. This ring has a high aspect ratio, meaning most weaves will be very loose.
Jewelry Brass 6.7
Bronze 6.6
Copper 6.9
Stainless Steel 6.9

P16 Copper Rings: inner diam. 5/16" (7.94mm), gauge 16 SWG

P16

16g 5/16
16g 8.0mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.4
  • Doubled Japanese 6-1 (12-2), with F18 — Note that this may be too tight for a bracelet, and especially tight in copper; however it works well for Japanese Flowers. For a more flexible piece, try P16 with G18.
  • Half Persian 4-in-1
  • Box weave
  • Oval
Jewelry Brass 5.4
Bronze 5.5
Copper 5.4
Stainless Steel 5.5

P18 Copper Rings: inner diam. 5/16" (7.94mm), gauge 18 SWG

P18

18g 5/16
18g 8.0mm		 Metal Aspect Ratio Recommended uses
Aluminum 7.1
    This ring has an unusually high aspect ratio, so most weaves will be too loose.
  • Perfect for Dylon Whyte's Spiral Necklace, as seen in Chain Mail Jewelry.
Jewelry Brass 6.9
Bronze 7.0
Copper 7.2
Stainless Steel 7.0

R16 Copper Rings: inner diam. 11/32" (8.73mm), gauge 16 SWG

R16

16g 11/32
16g 8.7mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.9
  • Double Spiral
  • Half Persian 4-1
  • Full Persian 6-1
  • Euro 6-in-1
  • Box
Jewelry Brass 5.8
Bronze 6.0
Copper 5.7
Stainless Steel 6.1

R18 Copper Rings: inner diam. 11/32" (8.73mm), gauge 18 SWG

R18

18g 11/32
18g 8.7 mm		 Metal Aspect Ratio Recommended uses
Aluminum 8.2
    This ring has an unusually high aspect ratio, so most weaves will be too loose. It is great for some of those crazy Persian weaves with high ARs, and eventually we'll post some of them here.
  • It works (though it's a bit loose) for Dylon Whyte's Spiral Necklace, as seen in Chain Mail Jewelry.
  • European 10-in-1
Jewelry Brass 7.8
Bronze 7.8
Copper 7.9
Stainless Steel 8.3

S16 Copper Rings: inner diam. 23/64" (9.13mm), gauge 16 SWG

S16

16g 23/64
16g 9.1 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.2  
Jewelry Brass 6.1
Bronze 5.9
Copper 6.3
Stainless Steel --

S18 Copper Rings: inner diam. 23/64" (9.13mm), gauge 18 SWG

S18

18g 23/64
18g 9.1 mm		 Metal Aspect Ratio Recommended uses
Aluminum 8.2  
  • Triple Spiral
  • Flowers (with H18 connectors)
  • Euro 8-1
  • Box (very open and airer)
  • Full Persian 6-1
  • Half Persian 3-1
Jewelry Brass 8.1
Bronze 8.0
Copper 8.3
Stainless Steel 8.1

T14 Copper Rings: inner diam. 3/8" (9.52mm), gauge 14 SWG

T14

14g 3/8
14g 9.5 mm		 Metal Aspect Ratio Recommended uses
Aluminum 5.1
  • Euro 6-1
  • 3-in-3
  • As large spacer rings (ie, separating byzantine units)
  • Oval
  • with I16 for Japanese 12-2
  • Dodecahedron
  • Box
  • Double Spiral
Jewelry Brass 4.9
Bronze --
Copper 4.9

T16 Copper Rings: inner diam. 3/8" (9.52mm), gauge 16 SWG

T16

16g 3/8
16g 9.5 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.5
  • European 8-in-1 works (use J16 as edging rings to create Sleek Cuff)
  • Full Persian (very flexible)
  • Dragonscale with L16 (or with K14 RUBR)
  • Viperscale
  • Use as spacers (ie, to separate segments of byzantine)
Jewelry Brass 6.4
Bronze 6.5
Copper 6.3
Stainless Steel 6.9

T18 Copper Rings: inner diam. 3/8" (9.52mm), gauge 18 SWG

T18

18g 3/8
18g 9.5mm		 Metal Aspect Ratio Recommended uses
Aluminum 8.6
    This ring has an unusually high aspect ratio, so most weaves will be too loose. It is great for some of those crazy Persian weaves with high ARs.
  • Ice Wyrm
  • Fire Wyrm
  • more uses to come
Jewelry Brass 8.6
Bronze 8.6
Copper 8.6
Stainless Steel 8.6

U16 Copper Rings: inner diam. 25/64" (9.92mm), gauge 16 SWG

U16

16g 25/64
16g 9.9 mm		 Metal Aspect Ratio Recommended uses
Aluminum 6.7
  • Akimbo

    More uses to come.
Jewelry Brass 6.7
Bronze 6.7
Copper 6.9
Stainless Steel 6.8

V16 Copper Rings: inner diam. 13/32" (10.32mm), gauge 16 SWG

V16

16g 13/32
16g 10.3 mm		 Metal Aspect Ratio Recommended uses
Aluminum 7.0  
  • Euro 8-1
  • Half Persian 3-1 doubled (a bit stiff)
  • Half Persian 4-1
  • Triple Spiral
  • Flowers (with L18 connectors)
Jewelry Brass 7.0
Bronze 7.1
Copper 7.1
Stainless Steel 7.1

X16 Copper Rings: inner diam. 7/16" (11.11mm), gauge 16 SWG

X16

16g 7/16
16g 11.1 mm		 Metal Aspect Ratio Recommended uses
Aluminum 7.7  
  • Used in Amy Leggett's "Wreath Bracelet" - Step by Step Wire Jewelry Aug/Sept 2012
  • Euro 10-1 (a bit stiff)
  • Helm Chain (with P16)
  • Japanese 12-2 (with F18)
  • Half Persian 3-1 doubled
  • Half Persian 4-1 double (very stiff)
  • Double Spiral
  • Shenanigans
Jewelry Brass 7.5
Bronze 7.5
Copper 7.6
Stainless Steel 7.5

Z16 Copper Rings: inner diam. 15/32" (11.91mm), gauge 16 SWG

Z16

16g 15/32
16g 11.9 mm		 Metal Aspect Ratio Recommended uses
Aluminum 8.4  
Jewelry Brass 8.1
Bronze 8.0
Copper 8.3
Stainless Steel 8.5

*

Return to Copper Pricing