4 x 50 Amp Battery Connector plugs (Interconnecting halves),8 x Copper terminals Silver plated,depending on your size choice (number of terminals supplied, will always be double the number of housings as there are two terminals required per housing.) Ratings: 50 amps, 600 Volts Maximum.Complete with terminals suitable for cables up from 6mm² (10AWG) to 16mm² (6 AWG) (depending on your terminal choice of size). Silver plated contacts - offers greater longevity when using high power, elevated temperature applications.Terminals can either be crimped or soldered to the cables. Mechanically keyed housings - prevents accidental component mating (each connector slots into the other - there is no male and female version) Single-piece housing - provides industrial strength quality and durability.Flat wiping contact system - wiping action cleans the contact surface during disconnection.