PFERD Comb click felt disc is used with polishing pastes for pre-polishing and high-gloss polishing of medium to large components. High-gloss polishing of components made of stainless steel (in ox) in chemical plants; mirror polishing of large press molds or injection molds. Comb click felt disc is used with polishing pastes in face-down grinding on variable speed angle grinders. Specification: Diameter: 5"; Recommended Speed RPM:1,500; Max RPM: 9,650.