2" Fine Surface Conditioning Discs-25pk Quick Change Surface Conditioning Scrim Black (SCSB) discs with R fastening system. Recommended for use in applications requiring considerable mechanical strength. Extremely quick to change. Fast and heavy abrasive action with high unloading properties. Compact design fits into hard-to-reach areas. Type III fastener features a roll-on/roll-off style (equivalent to the 3M Roloc fastening style). For use with ATD-6601 2disc holder. Recommended Applications: plastic products, machinery for the chemical and food industries, stainless steel furniture, automotive, aircraft and aerospace industries and stainless steel metal fabricators. Work Surfaces: Steel, stainless steel, aluminum, titanium and alloys, fiberglass, plastic, and glass. Max rpm: 25,000 3155 Yes - Di(2-ethylhexyl)phthalate (DEHP)