Feature:Our battery terminal connectors are made of pure copper, which has better corrosion resistance.It is universal used for automobiles, trucks, and caravan battery terminal connectors.Comes in battery terminal covers of positive and negative that are color coded by red and black.Specification:Material: Pure CopperColor: Red, Black, Brass ToneTerminal Covers Length: 66mm/2.6"Positive Battery Terminal Hole Diameter: 18mm/0.71"Negative Battery Terminal Hole Diameter: 17mm/0.67"Screw Size for Cable Fixing: 8mm/0.31"Package Included:2 Pair x Battery Terminal Connectors with Cover