Road Power 903-1 Top Post Battery Terminal, Chrome, 6 and 12-Volt Fits 6 through 1 gauge cabling Industry approvals: RoHs compliant Constructed 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 Side post adapters, charging posts, and several bolt combinations available