Copper Jump Rings Heavy Duty 12g Jewelry Supplies JSJ212 Jewelry Making & Jewelry Repair 12mm 2-Pack
This is the size of finishing ring we use on out thickest, heaviest necklace chains and bracelets. Heavy Duty 12g copper Jump Rings are an excellent choice for men’s jewelry repair and bold, statement designs for jewelry and other accessories.
These sturdy copper rings are made from 2mm thick, 12-gauge round wire. They are wound on a five-sixteenths-inch mandrel, which gives the rings an inside diameter of approximately 8mm. When finished, the outside diameter of the ring is about 12mm.
Each package contains two rings.
All of our finishing rings are made from pure, solid, raw, red copper.
ing size dimensions:
8mm ID - inside diameter 5/16” = .3” = 8mm
12mm OD - outside diameter approximately 12mm
AR4 – aspect ratio
Wire size dimension:
2mm - wire thickness 0.08" = 2mm
12g – AWG American Standard Gauge (14g SWG)