The hitachi g18dsl cordless angle grinder with multiplex protection circuit to maximise battery life has a high torque design and a low gear cover height for easier access to confined areas it has replaceable carbon brushes a side mounted switch and a low battery indicator its slimline soft grip enhances user comfort g18dsl 2 x 18 volt 50ah li ion batteries g18dsl4 bare unit no battery or charger specification no load speed 9100min disc diameter 115mm arbor 22mm overall length 296mm weight 18kg