ITEM NAME:20X Hot Cable Ends, Lugs, Ring Terminals, Connectors, Tin Plated Pure Copper M4 Heavy Duty Marine Grade Copper Lugs with Hole M4/M5/M6/M8 These tinned copper cable lugs are perfect for wiring wire Closed end design to keep environmental.These tinned copper cable lugs are perfect for wiring wire. Copper cable lugs are tinned for corrosion protection. Heavy Duty Marine Grade Copper Lugs with Hole M4/M5/M6/M8. Wire can be crimped or soldered to copper lug.