The Makita DTD157 LXT Impact Driver has a powerful brushless motor and electronic 2-speed impact power selection. Variable speed is controlled via a trigger. It also has an assist mode for controlled screwdriving. Fitted with an ergonomically designed high comfort grip. There is also an electric brake and an LED job light. Supplied as a Bare Unit - No Battery or Charger. Specification Driving Shank 6.35mm (1/4in) No Load Speed 0-1,300/0-3,000/min. Impact Rate 0-2,000/0-4,100/bpm Max. Fastening Torque 140Nm Capacity Bolt Standard M5-M14, High Tensile M5-M12 Machine Screw M4-M8 Coarse Thread 22-90mm Weight 1.2kg