- Type R is interchangeable with Type III Roll-on of Quick-Change Sanding Disc.
- Type S is interchangeable with Type II Screw-on of Quick-Change Sanding Disc.
- Type P is interchangeable with Type I Push-on of Quick-Change Sanding Disc.
- Ø 1/4" or Ø 6.0 mm steel shank.
- Can use the different diameter and degrees of hardness for vary grinding applications.