The wiring connection terminals are make of coppers materials for strong conductivity,better heat dissipation and good stability. Easy to Operate: Prepare the strips cable,then put the cable into the shrink tube,insert the cable and tighten the screws with the wrench,then heat the shrink tube to completes the wiring. Suitable for 8awg wire connection,ensuring a correct fit and secure connection. This wire connector are easy installation without the need for crimping tool,streamlining the setups process. Suitable for home appliances,automobiles,power industry,mechanical equipment.