Dental LED Electric Motor System Brushless with Water Supply 4 HolesDental LED Electric Motor System Brushless with Water Supply 4 Holes. Own Water Supply System. Motor matches the ISO E type international connection. Built in LED lighting system for more accurate surgery. Can be matched with 1: 5, 1: 1, 16: 1 internal water handpiece. Minimally invasive repair, polishing, pulp preparation ,etc. Overview Own Water Supply System. Suitable for clinic outside treatment training. The wide range of speed adjustment is