For precise sharpening of almost all chain types. Elegant, modern industrial design combined with a sophisticated technology that is thought out to the last detail. The swivel support allows you to maintain the correct angles for standard and chisel tooth chains. Parallel chain tension and optimum sharpening geometry device complete with 3 grinding discs (3.2 mm, 4.7 mm and 6 mm). Simple and easy to use. Durable motor, precise grinding.