The Milwaukee 49-16-2557 tool boot is for use with Milwaukee M12 FUEL™ 3/8" Ratchet (2557-20) only. This product provides a lightweight, durable solution that is meant to protect the tool and work surface. A durable rubber design will withstand corrosive materials commonly found in maintenance environments. Not for use on or near live electrical circuits. Use on any other product may result in damage to tool motor and may void tool warranty.