NortonĀ® GeminiĀ® 61463622190 Grinding Cone, Type 16, Diameter: 1-1/2 Inch, Length: 3 Inch, Grade: R, Grit: 24, Abrasive Type: Aluminum Oxide, Bond Type: Resin, Max Speed: 24190 Rpm, Bore / Shank Diameter: 5/8-11, Shape/Form: Round Tip, Mounting: Threaded, Product / Materials Abraded: Metals