Vitrified Mounted Point, Abrasive Material Aluminum Oxide, Bond Type Vitrified, Overall Dia. 3/4 in, Overall Thickness 1 1/2 in, Shank Dia. 1/4 in, Grit 60, Shape W207, Operating Speed - Maximum 24,000 RPM, Grade Medium, Compatible Tool Type Die Grinder, Straight Grinder