1. Silicone polisher for acrylics,HP shank(ISO 104):2.35mm diameter(3/32" inch),mainly used in dental laboratory.
2. Extra Coarse grit/Red,Coarse grit/Grey,Medium grit/Green and Extra Fine grit/Yellow.
3. 6 shapes,24 types,provide you any polishing requirements:pre-polishing,fine polishing,high shine polish...