... dental handpiece 4 holes disposable dental handpiecedisposable dental handpiece. 1,new type dental ... of copper core, which can connect to the pin tightly.4,High precision technical design, which avoid swing during the high ... patients5, Disposable use, prohibit re-use, Two years Validity time6, 4 holes connections.Specifications and technical parametersTypeHigh speed disposable dental turbine ...