Copper Double Barrel Crimp Sleeves for Monofilament Fishing Leader Line (1.8mm-2.6mm ID) Quantity: Choose the package quantity (100pc or 1000pc) Iniside Diameter: 1.8mm to 2.6mm (select diameter) For Monofilament Diameter: 1.5mm to 2.5mm Material: Copper Alloy Finish: Black Oxide