The HiKOKI WH36DB Brushless Impact Driver has a 4-mode speed selection that covers a wide variety of jobs: SM (Soft Mode) for delicate work; NM (Normal Mode); PM (Power Mode) for heavy work; SEM for self-drilling screws. The forward/reverse switch provides increased control, making it easy to switch between modes. A triple hammer mechanism, 3 anvils, provides higher power and extended life. The compact design is IP56 rated against dust and water ingress, making it ideal for site use. The body features a soft grip handle for increased comfort and reduced user fatigue. There is also a rubber nose protector. For added safety there is an electric brake. Other features include: a 3-mode LED work light (always on, automatic and always off), and a large side hook that can be fitted on the left or right-hand side. WH36DB/JRZ: 2 x 18/36V 5.0/2.5Ah Li-ion BatteriesWH36DB/J4Z: Bare Unit, No Battery or Charger Specification: Bit Holder: 6.35mm (1/4in)No Load Speed: 0-900/0-2,900/min.Impact Rate: 0-2,000/0-4,100/0-2,200/bpmMax. Torque: 210NmOverall Length: 127mmBare Weight: 0.9kgThe HiKOKI WH36DB/JRZ Brushless Impact Driver is supplied with: 2 x 18/36V 5.0/2.5Ah Li-ion Batteries*1 x UC18YSL3 Charger1 x Case *Multi Volt batteries for high power output similar to mains powered tools. Batteries are compatible with existing Hitachi/HiKOKI 18V tools.