4-1/2″, paddle switch, cut-off/angle grinder, powerful 7.5a motor delivers 11,000 rpm for high output power, small diameter barrel grip only 2-1/2″ for added comfort, labyrinth construction seals & protects the motor & bearings from dust & debris for longer tool life, lock-on/off feature for continuous operation, ac/dc switch for use with alternative power source, protective zig zag varnish seals the armature from dust & debris for longer tool life, extra large paddle switch for comfortable operation, thicker coil wires are wound more closely to reduce heat & energy loss, all-ball bearing design & metal gear housing for durability, rotatable gear housing can be positioned every 90 degree, includes: (5) 4-1/2″ grinding wheel, 4-1/2″ wheel guard, 4-1/2″ cut off wheel guard, lock nut, lock nut wrench, side handle, inner flange & case.