You will Get - 2 pieces jump rings opener / closer tool. WEIGHT - about 3.4g (0.12 oz) / piece. USABLE RANGE - 6 Widths of Slots, Compatible with 0.3-2.0mm(30-14 Gauge) wire jump rings. DIMENSIONS - Outside diameter x Inner diameter x Height= 20mm(0.78 inch) x 17mm(0.67 inch) x 9.8mm(0.39 inch). Material - Stainless Steel. Jump Ring Opener / Closer Tool, Stainless Steel Finger Ring Jewelry Makers (2 of Pack)