PFERD 31000 Mounted Point, Diameter: 3/4 Inch, Length: 2-1/2 Inch, Grade: Medium, Grit: 30, Abrasive Type: Aluminum Oxide, Bond Type: Vitrified, Max Speed: 20960 Rpm, Bore / Shank Diameter: 1/4 Inch, Shape/Form: A1, Mounting: Arbor, Product / Materials Abraded: Steel