Efficiently serving prosthetists and ceramists for years, Bien-Air air driven units are quite solid and simple. They use the best turbines that are currently prevailing in the market. These turbines, being best suited for accurate and delicate work, have a rotation speed measuring up to 300,000 rpm. Outstanding service life of the device could be attributed to its dust protection shield, which is particularly exclusive to this product. Further, it has 100 percent Swiss made air driven units, which come in three forms; one for the wall mounting and two for the table top. Besides having an STS Trimmer of 1 unit, the device is endowed with 1 TDS 890 Turbine having internal spray. The straight hose of the equipment is comprised of a 4 hole connector.