Cleaning and sterilizing rag wheels is nearly impossible. Pre-disinfecting dental appliances prior to polishing is time consuming. Pure Buff Disposable Polishing Wheels end the unavoidable contamination problems that standard cotton rag wheels present. Use with pumice or compound, then discard. Ideal for quick chairside adjustments. Autoclavable locking mandrel and retainer rings fit auto-chucks and most lathe shafts. Kit includes two mandrels, four retainer rings and 48 blue foam wheels.