Product Details Thick flat braided wire equivalent to 22 sq, with 6mm diameter terminal holes. Includes two copper washers for contact. * The genuine earth enhancement cable sold by DIY-LIFE (intended for connection to the negative terminal of the battery) has heat-resistant sheathing. However, this product is intended for connecting the engine and body, and 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.