Product Description : Professional Rivet Adaptor Fortum 4770651 The Fortum 4770651 Professional Rivet Adaptor can be used as a riveting tool when fitted to the clamping head of a cordless, electric or pneumatic drill, with a shank diameter of 2.4 / 3.2 / 4.0 / 4.8 / 6.0 / 6.4 mm in steel or stainless steel. The maximum travel of the rivet adapter is 1.7 cm, i.e. the protrusion of the rivet on the workpiece should in most cases be less than 1.2 cm. Rivet shafts are available with an overall length of up to 30 mm. Overall length of attachment: 180 mm Recommended operating speed for optimum performance