KOMET USA's abrasive caps are de-signed to smoothly and accurately grind hard and soft acrylics, silicone, and dry plaster. Constructed of glued paper and coated in abrasive grit, they compression-fit simply and precisely on a re-usable mandrel that features a stainless steel shank and a rubber head. The caps are offered in 3 sizes: 070-small, 100-medium, and 130-large. For more information, call (888) 566-3887.