Vitrified Mounted Point Abrasive Material Aluminum Oxide Bond Type Vitrified Overall Dia 1/8 in Overall Thickness 1/8 in Shank Dia 1/8 in Grit 90 Shape B124 Primary Material Application Carbon Steel Shank Length 1 1/2 in Specification 38A M/F Operating Speed - Maximum 91 770 RPM Series Gemini 38A Grade Medium/Fine Compatible Tool Type Die Grinder Flexible Shaft Grinder Straight Grinder Pencil Grinder Drills