Square Tip Grinding Cone, Abrasive Material Aluminum Oxide, Abrasive Type Type 17, Compatible Tool Type Die Grinder, Connector Size 3/8 In.-24, Connector Type Threaded Hole, Grit 24, Overall Diameter 1 1/2 in, Overall Length 3 in, Primary Material Application Aluminum, Brass, Bronze, Cast Iron, Copper, Nickel Alloy, Stainless Steel, Steel, Titanium, Tool Steel, Product Type Cone, Series Metal 57A, Maximum Operating Speed 24,190 RPM, Specification Norton Metal, Tip Type Round, Package Quantity 10