Polishing Strips and Disks are used for shaping and polishing of composite resin dentures. Grit sizes of abrasives are distinguished by colors. Customized grits and colors are available. Base Material PET Abrasive material Alumina Polishing strip single/dual grit size 4mm * 152mm Hose polishing disks =14mm & 12mm, Abrasive coating on both sides Air hole polishing disks =14mm & 12mm, Abrasive coating on single side. Applications Composite Resin Features Soft and safe, without causing damage and coloring to composite resin restorations ; Thin and flexible film can closely fit the surface of teeth ; Central blank area in the polishing strip makes it easy to insert into the gap of teeth without any damage to adjacent surface ; Fast and time-saving polishing ; The recommended rotational speed is 5000~10000 rpm, and the contact pressure is 0.3~0.6N. Package Includes : 26 or 27pcs Double sided abrasive coating ,Hose polishing disks ,=14 Single sided abrasive coating ,Polishing strip dual grit size ,4mm * 152mm purple -50m , blue -30m, green -20m , pink -12m Double sided abrasive coating ,Hose polishing disks ,=12 Single sided abrasive coating ,Polishing strip dual grit size ,4mm * 152mm blue -60m, green -40m , yellow-30m, white -12m Single sided abrasive coating ,Hose polishing disks ,=12 Single sided abrasive coating ,Polishing strip dual grit size ,4mm * 152mm purple -50m , blue -30m, green -20m , pink -12m