Vitrified Mounted Point Abrasive Material Aluminum Oxide Bond Type Vitrified Overall Dia 7/8 in Overall Thickness 2 in Shank Dia 1/4 in Grit 60 Shape A11 Primary Material Application Carbon Steel Shank Length 1 1/2 in Specification 38A M Operating Speed - Maximum 25 420 RPM Series Gemini 38A Grade Medium Compatible Tool Type Die Grinder Flexible Shaft Grinder Straight Grinder Pencil Grinder Drills