Used with Oregon Electric Sure Sharp® handheld grinder to easily sharpen your saw chain. Includes three 3/16" (4.8 mm) replacement shapening stonesThese stones leave an excellent cutting edge on saw chain and are easily replaced on most electric chain sharpenersFor use with Oregon electric Sure Sharp and other chain sharpenersFor use with Oregon electric Sure Sharp and other chain sharpenersCutting attachments for chain saws, brush cutters and trimmers: chainsaw cutting chain, lawn mower blades, mower parts, saw chain sharpening accessories.