The annular cutter re-sharpening machine sharpens High speed steel and Carbide annular cutters with maximum precision. Laser alignment for fast precise setup. Will sharpen cutters from 1/2″ to 3-15/16″ diameter. Will do depths of cut 1″ to 3″. Laser guided cutter alignment ensures correct positioning of cutting edge to the wheel. This will work on all manufacturers of annular cutters.