Milwaukee® Side Handle Assembly is designed for 2780-20 M18 Fuel™ angle grinders with paddle switch & lock off, 6117-30 5", 6117-31, 6161-31 5" & 6" HP angle grinders with paddle switch, 6117-33 5", 6161-33 6" HP angle grinders with slide switch, 6117-33D 5", 6117-59A 125 mm HP angle grinder with slide switch & speed dial, 6161-30 6", 6117-30 5" HP angle grinder with paddle switch & lock on, 6124-31 6" HP rat-tail angle grinders, 6124-30 5" HP rat-tail angle grinder with lock on, 6117-31B 5" HP angle grinder with paddle switch & brake and 2781-20 M18 Fuel™ angle grinder with slide switch & lock on.