Makita's 4 inch Angle Grinder, model GA4030K, combines power with comfort and motor-protection features for longer-lasting performance for a range of industrial grinding applications. The GA4030K is a versatile and powerful grinder engineered for demanding applications including cutting brick and masonry, cutting ferrous metal, paint and rust removal, shipyard maintenance, heavy machinery, metal polishing, general grinding, auto repair work, cutting limestone and more.