Milwaukee® Service Field is designed for 6116-30 4 1/2" & 5", 6160-30 6" angle grinders with paddle switch with lock-off, 6116-31 4 1/2" & 5", 6160-31 6" angle grinders with paddle switch and 6116-33 4 1/2" & 5", 6160-33 6" angle grinders with slide switch.