These swivels have an ultra-smooth rotation. Round swivel eyes ensure maximum knot strength. They are for attaching your main line to leader, for reducing line twist, or if you make your own wire traces, for rigging at the end. Its black nickel color reduces light reflection and swivel-attacks from toothy fish. They will protect your gears from hurt and make rigging much easier. Size 1 | Length: 0.75(19mm) | LB TEST: 104LB | QTY.:50pcs Size 2 | Length: 0.67(17mm) | LB TEST: 95LB | QTY.:50pcs Size 3 | Length: 0.59(15mm) | LB TEST: 88LB | QTY.:50pcs Size 4 | Length: 0.55(14mm) | LB TEST: 77LB | QTY.:50pcs Size 5 | Length: 0.50 (12mm) | LB TEST: 71LB | QTY.:50pcs Size 6 | Length: 0.47 (12mm) | LB TEST: 66LB | QTY.:50pcs Size 7 | Length: 0.45 (11mm) | LB TEST: 49LB | QTY.:50pcs Size 8 | Length: 0.39 (10mm) | LB TEST: 42LB | QTY.:50pcs Size 9 | Length: 0.35 (8mm) | LB TEST: 31LB | QTY.:50pcs Size 12 | Length: 0.28 (7mm) | LB TEST: 20LB | QTY.:50pcs Size 1/0 | Length: 0.8 (20mm) | LB TEST: 132LB | QTY.:40pcs Size 3/0 | Length: 0.9 (23mm) | LB TEST: 220LB | QTY.:40pcs Size 6/0 | Length: 1.4 (35mm) | LB TEST: 352LB | QTY.:20pcs Size 10 | LB TEST: 30Lb | QTY.:50pcs Size 6 | Length: LB TEST: 66Lb | QTY.:50pcs Size 2/0 | Length: 0.94 (24mm)| LB TEST: 165Lb | QTY.:20pcs Size 4/0 | Length: 1.18 (30mm)| LB TEST: 298Lb | QTY.:20pcs Size 8/0 | Length: 1.61 (41mm)| LB TEST: 551Lb | QTY.:20pcs Size 10/0 | Length: 1.89 (48mm)| LB TEST: 772Lb | QTY.:20pcs Size 12/0 | Length: 2.36 (60mm)| LB TEST: 1323Lb | QTY.:20pcs