Supply voltage 230 Volt, powerful and accurate, fully equipped with ball and roller bearings for long service life and precise work, pre-set number of revolutions with setting wheel. Auto-locking metal chuck for high precision and long service life,with anti-loosening safety screw during left-hand rotation, 43 mm collar Ø for use on a column support. Included: Auxiliary handle Depth stop 210 mm Keyless chuck high precision