Hold and drive fastening tool. Offers a choice of speeds and hold and drive heads to handle Riv-nut setting from 3mm to 10mm / 1/4″ to 3/8″. Unique paddle forward-reverse trigger for instant change in direction. 0.4 HP Motor for extra stall resistance. Through handle exhaust. Ergonomic grip offers ultimate comfort and reduced vibration. A mdel and head size must be stated when ordering.