(HP) Handpiece Pre-Polishing : Porcelain - opt. 16,000 rpm NTI CeraGlaze is a diamond-impregnated polishing system restore a natural high shine to porcelain and eliminate the need for refiring. Handpiece sold individually. Friction Grip & RA/Latch available in packs of 3. HP & RA/Latch recommended speed: 5,000-7,000 rpm. Autoclavable. FG polishers should be used at minimum speed allowed by your electric handpiece, and with light pressure.