... rotor is made of copper core, which can connect to the pin tightly.4,High precision technical design, which avoid swing during ... the high-speed operating. More comfortable for the patients5, Disposable use, prohibit re-use, ... 245KpaRotated speed300,000 to 370,000r/minAppicable bursThe diameter of the bur is 1.6mm and should be conformed ISO standard ...