250-500Pcs/Box Single Double Barrel Crimping Sleeves Fishing Line Wire Leader Round Copper Tube Connectors Fishing Accessories
https://www.vogueparade.com/shopping/EN/100005537/1/1005003751461558/250-500pcsbox-single-double-barrel-crimping-sleeves-fishing-line-wire-leader-round-copper-tube-connectors-fishing-accessories//