The Bosch GDX 18V-200C Cordless Impact Driver/Wrench delivers high power in a compact size. It has an excellent head length to torque ratio for powerful use, even in hard-to-reach areas. It features a 2-in-1 bit holder, allowing 1/4in internal hex and 1/2in square drives. The Impact/Driver has a brushless motor for increased efficiency and durability. It also features a soft grip for comfort and an LED light for workpiece illumination. Specification: Bit Holder: 1/4in Internal Hex and 1/2in External Square No Load Speed: 0-1,100/2,300/3,400/min. Impact Rate: 0-2,300/3,400/4,000/bpm Max. Torque: 200Nm This Bosch GDX 18V-200C Brushless Impact Driver/Wrench is supplied as a Bare Unit - No Battery or Charger.