Weiler 56490 Mandrel For Type 1 Cutoff Wheels, Diameter Shank, Arbor Size Mandrel mounts a Type 1 cutoff wheel with a arbor hole onto a grinder that accepts a shank Fits to wheels Carbon steel provides strength for extended tool life Air Compressor Tools, Black Chucks, Dremel Accessories, V Model, Angle Grinder, Air Tools, Cut Off, Shank, Type 1