The DEWALT DCF870E2T Hyrdralic Impact Driver features an active valve system.The valve spring compensates for viscosity changes in the oil filled mechanism for improved performance and longevity. The tactile 3 - mode select feature allows the user to select easily different modes and speed controls.It has an ultra compact design, only 100mm from front to back. This makes itextremely ergonomic and allows improved access into confined spaces. A9 LED ring light gives optimum brightness to deliver increased visibility in darker areas. Up to 82 lumens with 20-minute flashlight mode.Supplied with:2 x 18V 1.7Ah POWERSTACK Li-ion Batteries, 1 x Charger and1 x TSTAK Kitbox.POWERSTACK batteries deliver 50% more power* with a 25% smaller** footprint and work with all of the 18V XR tools you already have.* Regarding 50% more power: vs DCB183 battery, not in application.** Regarding 25% smaller pack and a more compact footprint: vs DCB183 battery.Specifications:Bit Holder: 6.35mm (1/4in) .No Load S