Vitrified Mounted Point, Abrasive Material Aluminum Oxide, Bond Type Vitrified, Overall Dia. 3/4 in, Overall Thickness 1 1/8 in, Shank Dia. 1/4 in, Grit 36, Shape A5, Primary Material Application Carbon Steel, Shank Length 1 1/2 in, Specification 38A CRS, Operating Speed - Maximum 38,550 RPM, Series Gemini 38A, Grade Coarse, Compatible Tool Type Die Grinder, Flexible Shaft Grinder, Straight Grinder, Pencil Grinder, Drills