Product Description: Specialized patented jaws for side mount and post batteries; Positive connection on side mount batteries and posted batteries with legs; Equipped with extra heavy duty spring for better clamping; Will work with 4ga, 2ga, 1ga and 1/0ga wire; Heavy Copper Coated Teeth on BOTH inner sides of Clamp - Extreme power transfer; Heavy-duty spring-loaded steel clamps, PVC coated for safety. (Due to the light and screen difference, the item's color may be slightly different from the pictures.) Specifications: .