SANDDRUM KIT 1.5X1.5" *Brand Name: Gator *Diameter: 1.5 in. *Length: 1.5 in. *Material: Aluminum Oxide *Product Type: Drum Sander Kit *Grit: 50 Grit *Grade: Coarse *Number in Package: 1 pc *Usage: For use with electric drills *Maximum Speed: 4000 rpm *Shank Diameter: 1/4 in.