Our M12 FUEL™ Protective Boot is for use with the 3/8" Ratchet (2557-20). This ratchet boot provides a lightweight, durable solution to protect the 3/8" ratchet tool and work surface. The 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 the MILWAUKEE® tool warranty.