The LAZER blade sharpener features a 12 inch diameter grinding wheel. The square base is constructed of cast aluminum to provide the utmost stability. The LAZER is equipped with a ¼ horsepower motor that turns the wheel at 1725 RPM’s. “CAN NOT be used to sharpen small blades that are used on Andis 2speeds, Wahl or Oster A5 clippers.” For large sheephead and Oster hair head clipper blades only.