PFERD Comb click surface finishing discs are ideal for very fine grinding of surfaces and contours, as well as cleaning work on metals and painted surfaces. The open structure and high flexibility of the non-woven material prevents loading of the tool. Choose the soft finishing discs for matt finishing or structuring of components made of stainless steel (in ox), very fine grinding of brass, copper, titanium and aluminum. For best results, use recommended operating speeds. Non-woven soft type discs for very fine grinding of surfaces and contours, as well as cleaning work on metals and painted surfaces. The open structure and high flexibility of the non-woven material prevents clogging of the disc. Specification: Diameter: 4-1/2"; Recommended Speed RPM:3,300; Max RPM: 10,500; Grit: Very Fine.