Makita 4-1/2 inch Angle Grinder combines 7.5 amps power with comfort and motor protection features for longer lasting industrial performance. The angle grinder also features a range of durability features including labyrinth construction which seals and protects the motor and bearings from dust and debris for longer tool life, as well as a protective zig-zig varnish engineered to seal the armature from dust and debris.