High precision instruments, reliable and robust. All Bien-Air handpieces are equipped with the standardized E Standard coupling, the most widely used in the world. Here, in the E INTRAmatic LUX version, with internal spray and 3 seperate air/water outlets, with dual glass optics. Anti-heat push-button chuck. Easy maintenance with Lubrifluid spray. Equipped with a non-return valve in the handle, able to withstand many sterilizations.