Grinding Wheel Abrasive Depth 1/4 in Abrasive Material Diamond Back Thickness 1/2 in Concentration 75 Connector Size 1 1/4 in Connector Type Unthreaded Hole Grit 120 Compatible Tool Type Tool and Cutter Grinder Primary Material Applicationn Ceramic Composite Glass Natural Stone Plastic Overall Diameter 6 in Overall Thickness 1 in Rim Thickness 3/16 in Series B99 Specification ASD120-R75B99-1/8 Wheel Type Type 12 Maximum Operating Speed 6 050 RPM Bond Type Resin