GRINDER ANGLE 4.5"MAKITA Light Switches & Dimmers solid brass construction car accesories solid brass construction Match the air speed to the task in both blower and vacuum modes with the infinitely variable knob for added comfort Labyrinth construction seals and protects the drive gear and bearings from contamination for longer tool life Lock on off feature for continuous operation AC DC switch for use with alternative power source Protective zig zig varnish seals the armature from dust and debris for longer tool life Extra large paddle switch for comfortable operation Thicker coil wires are wound more closely to reduce heat and energy loss All ball bearing design and metal gear housing for durability as well as a protective zig zig varnish engineered to seal the armature from dust and debris