There are devices that, even 40 years later, still command respect and admiration and the CA 1:1 and CA 1:5 electric handpieces from the Bien-Air Classic line are two of them. Constantly evolving, their commanding productivity and exceptional durability make them the most popular models in the line. The series’ completely redesigned rotary motion and bur clamping mechanism ensures micron-precise concentricity and stability, while a speed range from 60 to 200,000 rpm will allow you to carry out the most complex restoration work with incredible precision and on your own terms. The CA 1:1 and CA 1:5 handpieces exemplify the reliability and quality on which Bien-Air has built its reputation.