Quantity: Sold per package of 20 jump rings.
Material: 18K gold over 925 Sterling Silver.
Style: Open jump ring.
Thickness: 18 gauge or 1mm
Outer Diameter: 7mm
Weight: 3.14 gram per package of 20 pieces
Gauge to mm Conversion Chart Gauge mm (approx.) 0.3mm = 28 gauge 0.4mm = 26 gauge 0.5mm = 24 gauge 0.6mm = 22 gauge 0.7mm = 21 gauge 0.8mm = 20 gauge 0.9mm = 19 gauge 1.0mm = 18 gauge