Product features 1. Fully annealed electrolytic purple copper construction provides excellent conductivity.100% tin plated copper resists corrosion from salt and moisture. 2. Heavy Duty Construction for Enhanced High Temperature Durability. 3. Seamless barrel design allows for maximum strength when crimped. 4. Closed end design seals out moisture so cables stay dry and corrosion free 5. Wire gauge identification marked on lug barrels. Widely used in household appliances, automobiles, electrical industry, mechanical equipment, power distribution cabinets, etc. Product description Heavy duty Electrical Lugs are great for inverters, Battery and automotive applications. These lugs can be connected to a cable such as a battery cable by simply stripping insulation from the end of your cable, placing the lug over the exposed cable and crimping the barrel tightly and securely to the end of the cable. They can also be soldered on if you prefer. These lugs are made of purple copper which offers excellent conductivity for any application you my have.Copper lugs feature a burr-free appearance for an aesthetically pleasing finish and seamless performance.   Quantity: 5 PCS Material: Purple Copper Wire Gauge: 8 AWG (10mm²), 6 AWG(16mm²), 4 AWG(25mm²), 2 AWG(35mm²), 1 AWG(44mm²), 1/0 AWG(50mm²) Hole Size: M5( 10), M6(1/4"), M8(5/16"), M10(3/8"), or M12(1/2") Warranty: Lifetime Warranty