Particularly robust and simple to use, Bien-Air pneumatic units and their TD and TDS turbines provide the optimum response to the demands of ceramics and prosthetics specialists. Ideal for delicate, precise work, robust and simple to use, these units are unrivalled. The superior qualities of the STS-Trimmer unit really set it apart. Fitted with a 1.4 litre tank, it can operate autonomously for significant periods. Controlled by separate switches, the flow rate and the air/water spray mixture can be finely adjusted for optimum cooling. In combination with turbines fitted with a dustproof shield and Friction Grip chuck, Bien-Air air-driven assemblies offer you the best… Over the long term.