Arm type; uses 3/8 x 18 in. And 1/2 x 18 in. Belts; 0.5 hp; 360 degrees pivoting head; detachable belt guard; 7 degrees offset handle; includes three 3/8 in. Belts (60, 80 and 120 grit) and three 1/2 in. Belts (60, 80 and 120 grit); furnished in plastic case