Specially designed for the quick change of milling cutters or upper millstones with the same diameter of axis. Both, opening and closing can be done by turning the lever. Very easy change of clamp. Body of anodized dur-aluminium. Steel-axis mounted on leakproof bearing of high quality. Diameter of clamps: 1/1.5/2/2.35/3/3.2 mm. Furthermore does exist clamp nº 0 which covers 0 until 0,9 mm. Generally the hand piece is delivered with clamp of 2.35mm.