The Scotch-Brite Centre-Pin Back Up Pads are Used in Conjunction With Scotch-Brite Surface Conditioning Discs. A Centre Hole in the Hook Faced Surface Conditioning Disc Combined With a Centre Pin in the Back-Up Pad Allow the Discs to be Quickly and Easily Centred, Without Affecting the Use of the Disc or Interfering With the Work Surface.
•Quick and Easy Placement and Centering of Discs
•Does Not Interfere With Work Surface
•Allows Disc to be Used At Usual Angle