300-500pcs/Box Single/Double Barrel Crimping Sleeves Fishing Line Wire Leader Round Copper Tube Connectors Mixed Copper Tubes
https://www.vogueparade.com/shopping/EN/100005537/1/1005003633827763/300-500pcsbox-singledouble-barrel-crimping-sleeves-fishing-line-wire-leader-round-copper-tube-connectors-mixed-copper-tubes//