... Dental Unit SL-8500 (dental chair,dental) 1.high-quality and new model product 2.ergonomic, ... european design 3.multi-acces Dental Unit SL-8500 (dental ... chair,dental)Product Intro:STANDARD ACCESSORIES1. NSK four-way high speed air turbine H.P.,2 sets;2 ... human engineering theroy, design more user-friendly.2. Perfect linkage compensation design, to enable ...