Bench or wall mounted Professional grinder: Powerful performance with hydraulic clamping assistance unique to the 620-230. Perfect for professional users. Ideal for frequent, high volume chain sharpening Save time and 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 chainsaw sharpener: Electric chainsaw chain sharpener, sharpens up to .404 Inch pitch chain. Sharpen almost any saw chain from manufacturers such as Oregon, Stihl, Husqvarna, and others Accurate chain saw sharpening device: 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 and 4.7mm) and a 6.0mm flat profile disc for depth gauge maintenance