The Oregon Bench/Wall Chain Sharpener is perfect for the regular user. Mounts to either a bench or a wall. Sharpens chains up to 0.404in. pitch chain. 2.1 Amps. Wheel Included Yes, Wheel Diameter in. 5 3/4, Watts 140, Volts 120, Rated RPM 3,500, Mount Type Bench/wall, Motor Hz 60, Chain Pitch in. 1/4-0.404, Bore Diameter in. 7/8, Bolt Hole Shape Round, Assembly Required Yes, Arbor Size in. 7/8, Product Type Sharpener/grinder. Sharpens 1/4in., 3/8in. low profile, 0.325in., 3/8in. pitch and 0.404in. pitch chain Top plate angle settings Easy-to-use controls for precise adjustments Self-centering chain vise Includes 3 5 3/4in. dia. grinding wheels, wheel dressing brick, wheel contour tool and built-in light One-way motor operation for greater operator safety Safety shield helps prevent injury Model Number: 410-120. Age Group: Adult.