? Toolroom Wheel >4",Toolroom Wheels ? Take on medium to heavy stock removal applications with the 32A AO Type 01 toolroom wheel, which features an monocrystalline aluminum oxide grain for exceptional strength and sharpness. This wheel requires minimal dressing and provides cool, fast cutting action when paired with a CNC cutting tool machine, cylindrical grinder or surface grinder. A vitrified bond is ideal for use with a variety of tool steels at moderate to heavy feed rates, including vanadium alloy steels. ? Type 01 straight wheels with exceedingly strong, sharp monocrystalline aluminum oxide grain, ideal for precision production medium to heavy stock removal applications ? The most versatile vitrified bond, especially recommended for CNC cutting tool machines, and cylindrical and surface grinding ? Grinds with an exceptional cool, fast cutting action, requires minimum dressing ? Particularly suited for grinding all kinds of tool steels, including tough vanadium alloy steels, with moderate to heavy feed rates ? Outstanding form holding