Buffalo Tools ECSS Electric Chainsaw Sharpener Keep your chain in top condition and save money by sharpening your own saw Mounts to bench, wall or vise for easy access and stability Adjusts to most popular chain designs 4200 RPM grinding speed, 60 Hz, 85-watt, plugs into a standard 120-volt wall outlet Uses a 4-1/4-Inch x 1/8-Inch grinding wheel with 7/8-Inch arbor