Vitrified Mounted Point, Abrasive Material Ceramic, Bond Type Vitrified, Overall Dia. 11/16 in, Overall Thickness 1 1/4 in, Shank Dia. 1/4 in, Grit 60, Shape A12, Shank Length 1 1/2 in, Specification 3NQ60, Operating Speed - Maximum 48,000 RPM, Series Quantum, Grade Medium, Compatible Tool Type Die Grinder, Straight Grinder