Flaring Cup Grinding Wheel Abrasive Material Silicon Carbide Back Thickness 3/4 in Connector Size 5/8 In.-11 Connector Type Threaded Hole Grit 16 Overall Diameter 6 in Overall Thickness 2 in Rim Thickness 1 1/2 in Primary Material Applicationn Aluminum Brass Bronze Cast Iron Copper Titanium Compatible Tool Type Cup Grinder Specification NZC16-QB-X406 Wheel Hardness Q Wheel Type Type 11 Maximum Operating Speed 6 000 RPM Series Blue Fire NVC SC