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 ist 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. Specifications: 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.