Bench or wall mounted professional grinder: Powerful performance with hydraulic clamping assistance unique to the 620-120. Perfect for pro users. Ideal for frequent, high volume chain sharpening Save time & money: Sharpen your own chainsaw chains. Grinder easily mounts to a bench or wall with two included bolts - ideal for a workshop or garage Universal sharpener: Sharpens up to .404” pitch chain. Sharpen almost any saw chain from manufacturers such as Oregon, Stihl, Husqvarna, and others Accurate Sharpening: Multiple adjustment points for sharpening accuracy and built in light for better visibility. Includes: Grinder, a dressing brick and profile guide, operator instructions plus two grinding wheels (3.2mm & 4.7mm) and a 6.0mm flat profile disc for depth gauge maintenance