Blu low-speed handpiece internal water spray system. Kit contains: Contra angle: Features: - Max Speed: 30,000 rpm. - For CA brush (2:35). - Push button chuck. - Hygienic head system. Straight handpiece: Features: - Max Speed: 40,000 rpm. - For HP brush (2:36). - Push button chuck. - Hygienic head system. Air motor: Features: - 2/4hole. - Max Speed: 30,000 rpm.