Round Tip Grinding Plug, Abrasive Material Aluminum Oxide, Abrasive Type Type 18R, 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 Plug, Series Gemini 57A, Maximum Operating Speed 24,190 RPM, Specification 57A24-R, Tip Type Round