Product Details Thick flat braided wire equivalent to 22 sq, with 6mm diameter terminal holes. Includes two copper washers for contact points. * While the genuine earth enhancement cables sold by DIY-LIFE (intended for connection to the negative terminal of the battery) have heat-resistant sheathing, this product is intended to connect the engine and body, and therefore uses flat braided wire with excellent heat dissipation properties, without sheathing. * Special processing makes the wire less likely to bend and easier to install. * Uses high-quality flat braided copper wire (plated surface treatment) from a domestic manufacturer.