Check the listing for details. Solid Sterling Silver Open Jump Rings 21 gauge 3.5mm (50pcs) Silver Findings. Color: Silver, Condition: New without tags. Listed at 8.25 USD. Solid Sterling Silver Open Jump Rings 21 gauge 3.5mm (50pcs) Silver Findings Price: Sold per package of 50 jump rings. Material: 100% solid Genuine 925 Sterling Silver. Style: Open jump ring. Measurement: 21 gauge (0.7mm in thickness), 3.5mm OD (Outer Diameter). SKU#: 205121-035 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 gaugeThese jumprings are also available in gold plated sterling silver! If you have a Business License or Tax Id, we have up to 50% wholesale discount for all of our products. Please send us a message to inquiry and open a wholesale account. Pictures only show the shape of the product, for actual size please read the measurement. Thank you for visiting Bead Union EBay store. Click on categories below to see other products... SmartCounters-->