This versatile tool will effectively sharpen both hedge trimmers and chainsaw chains to better than factory-new edge. It is the only product on the market that doesn't require the user to remove trimmer blades. This, in addition to its portability and ease of use will make it a favorite of professionals and home handymen alike. The F210 Dual-Sharp includes a selection of grinding stones, 5/32,3/16,7/32 and 5/16, as well as a depth gauge and stone adjustment tool. Its sturdy polycarbonate shell, fan cooled motor and steel components insure a long life.