Vitrified Mounted Point Abrasive Material Ceramic Bond Type Vitrified Overall Dia 1 in Overall Thickness 1 in Shank Dia 1/4 in Grit 80 Shape W220 Shank Length 1 1/2 in Specification 3NQ80 Operating Speed - Maximum 25 500 RPM Series Quantum Grade Medium Compatible Tool Type Die Grinder Straight Grinder