Dynabrade sanding disc backing pad has a diameter of 2 in. The PSA attachment allows for easy mounting to the tool or pad. All abrasive products that rotate or spin, such as the ones in this category, have a maximum speed at which you can run them. This Dynabrade sanding disc backing pad can be run at a maximum speed of 20000 RPMs.

Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty 
