For making heavy duty rigs and deep sea rigs. Thanks to its strong construction, it can rotate flexibly. Suitable for various types of fishing, this swivel is a reliable helper. The design helps prevent fishing line from knotting or twisting. Connector allows for convenient and fast attachment to rods, sea rods, rock fishing setups, fishing lines, lures, and more. Specification: Material: Metal Length 2/0: 16mm / 0.63 inch; Internal Diameter: 2.5mm / 0.10 inch; Swivel Length: 23mm / 0.91 inch; Test: 71kg Length 1/0: 22mm / 0.87 inch; Internal Diameter: 2mm / 0.08 inch; Swivel Length: 23mm / 0.91 inch; Test: 57kg Length 1: 22mm / 0.87 inch; Internal Diameter: 2.1mm / 0.08 inch; Swivel Length: 19mm / 0.75 inch; Test: 44kg Length 2: 19mm / 0.75 inch; Internal Diameter: 1.9mm / 0.07 inch; Swivel Length: 18mm / 0.71 inch; Test: 40kg Length 3: 15mm / 0.59 inch; Internal Diameter: 1.5mm / 0.06 inch; Swivel Length: 15mm / 0.59 inch; Test: 38kg Length 4: 14mm / 0.55 inch; Internal Diameter: 1.3mm / 0.05 inch; Swivel Length: 14mm / 0.55 inch; Test: 35kg