These heavy duty battery terminals are lead-free and made from a durablemagnesium/aluminum alloy with a plated steel cable clamp and hardware. Theyare intended for use for 6 and 12-volt batteries: top post, side post, truck,and marine battery terminals. Sold as Each Dimensions: 10″ x 5″ x 2″ Fits 6 through 1 gauge cabling Industry approvals: RoHs compliant Made of magnesium-aluminum alloy with plated steel cable clamp and hardware Intended use for 6 and 12-volt batteries: top post, side post, truck, and marine battery terminals