Type: Fishing Rolling SwivelMade of Copper , Sturdy Constructed, High StrengthBest Combo from Size 2 to 10, LB Test from 30LB to 97LB.Item Color: blackPerfect for Various Rigs and Leader Trace Making and Also High Performance in Fishing, General Freshwater, Saltwater, Offshore FishingColor: Glassy BlackMaterial: Copper Size: 2, 4, 6, 8, 10Box Size: 9.7*4.8*1.6cm Weight: 78gSize: 2: Length: 16mm/0.61inchTest Weight: 40kg/77lbSize: 4: Length: 15mm/0.59inchTest Weight: 35kg/77lbSize: 6Length: 12mm/0.47inchTest Weight: 30kg/66lbSize: 8Length: 10mm/0.39inchTest Weight: 19kg/41lbSize: 10Length: 9mm/0.35inchTest Weight: 14kg/30lbPackage Contents: 250 * Fishing swivel1 * plastic boxOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.