Oregon grinding wheels fit most Italian and Chinese made professional chain grinders. These wheels are made of electrofused crystallized aluminum oxide in a chromium oxide solution. These wheels are soft enough to remove material quickly, but hard enough to keep their shape. Oregon grinding stones do not come dressed. We recommend the purchase of a dressing brick (Oregon DB-2) and wheel contour template (Oregon 35596). 534-14 (For 1/2" Chain and Depth Gauges)Wheel Diameter 5-3/4" (146mm)Wheel Thickness 1/4" (6.4mm)Wheel Bore 7/8" (22.2mm)Coarsness 60 GritFits the Following Chain Grinders: Maxx 120V Grinder, Speed Sharp 120V Grinder, Carlton Profi 110, Efco/Tecomec FL 136, Northern 193020, Oregon 410-120, 520-120, 620-120, 510, 511A, 511AX (DuraMAX), Techomec JollyStar & SuperJolly, Tilton TL6, TL136, Windsor A225
