... Use good raw material peel the coat of wire,then insert to tube,use pincers to fix themfeature ... long copper tube,easy to conduct electricity and hold wire tightly!· size:D3,D4,D5,D6,D7,D8, ... Nylon 66, 94V-2· Usage: Peel the coat of wire, then insert to tube, use pincers to fix them ... long copper tube , easy to conduct electricity and hold wire tightly. Type A(mm)(mm)D(mm)Suitable wiresPackingBCmm2awgHDS ...