Extremely simple and solid, Bien-Air air-driven units have been the best friends of ceramists and prosthetists for many years now. Their turbines - the best on the market - have something to do with this: with a rotation speed of 300,000 rpm, they prove ideal for delicate, precise work. A dust protection shield, unique to Bien-Air, helps give them an extraordinarily long service life. Bien-Air's air-driven units, 100% Swiss Made, are available in three versions: two table-top and one for wall mounting. TD 783 turbine for 2-hole coupling, friction grip (FG)