Ensuring ease of knot tightening or PE line and leader line tightening while protecting your fingers from the tensile force of the lines and preventing the slippage of the lines, thus keeping your fingers free of pain.Put your finger into the ring, and wind and tighten the line around the circumference of the ring.Shime Ring : Size: 32 ? 40 ? 8.1 mm; inner dia.: 22 mm.Weight: 3 g ;Coil Rope : Size: Overall length (including snap): 105 mm;Max. extension: 500 mm.Weight: 2 g; Quantity: Two each. Line system compatible.Not hurting your fingers.Ideal for knot tightening and PE line connection.Put your finger into the ring, and wind and tighten the line around the circumference of the ring.Provided with a U-shaped rubber ring preventing line slippage and attaching to bags and vests.A set of two coil ropes extending to 50 cm.