NortonĀ® GeminiĀ® 61463624378 Mounted Point, Diameter: 1 Inch, Length: 2-3/4 Inch, Grit: 60, Abrasive Type: White Aluminum Oxide, Bond Type: Vitrified, Max Speed: 15530 Rpm, Bore / Shank Diameter: 1/4 Inch, Shape/Form: A3, Mounting: Mandrel, Product / Materials Abraded: Metals