King Innovation 95125 3 Port Aluminum To Copper Lug 12-10 AWG Aluminum 18-10 AWG Copper Bag of 25 One piece for easy installation Tin plated lug with three ports and nickel-plated compression screws Ports of connectors contain a layer of Corrosion Inhibitor More cost-effective alternative for replacing aluminum electrical wire systems UL 486C Listed to meet U.S. and Canadian specifications. Approved by Consumer Products Safety Commission (CPSC) and insurance companies