NTI Acrylic Polisher Assortment Package Handpiece For Acrylics Intra Oral Silicone P0006 Each Used on acrylics for pre-, fine, and high-luster polishing. Built for in difficult-to-reach regions. Available in fine, medium, and coarse. Autoclavable. The NTI Acrylic Polishers are specially designed for orthodontic and prosthetic acrylics and are excellent sandpaper replacements for areas that are hard to reach. These autoclavable rotary instruments are available in coarse for pre-polishing, medium for fine polishing and achieving a light shine, and fine grit for a high-luster polish.This Assortment Pack includes two each of 10 mm round end taper polishers.