Quick change with cylindrical shaft for ER-Collets. Available for ER16 collets. - Ultra precise fitting of the interchangeable head. Rigid fixation. - With inner coolant. Hydraulic connector G1/8“ - Quick change, without having to remove the tool-holder from the drill unit - Presetting is possible outside of the machine - Available tool-holder diameters : 22 mm, 25 mm and 3/4”