These Quick Change Sanding Discs are available in two stiffness grades with regard to the flexibility of the edges of both the disc and holder pads. The Medium Edges flex only a little making them suitable for work on relatively flat surfaces where the potential for edge scoring is limited.
The Soft Edges are soft and flexible making them particularly suitable for work on contours and concave or convex surfaces where the potential for edge scoring is high. The discs feature Aluminum Oxide abrasive with a strong cloth backing. The Quick change fastener system is very simple. A simple twist will attach the sanding disc to the holder pad (sold separately). The 1/4" shank on the holder pads will fit most flex shafts, die grinders and drills. Industrial quality. Made in Germany.