The DEWALT DCK2088P2T XR Brushless 2 Speed Twin Kit, contains the following:

1 x 18V DCF899 XR Brushless High Torque Impact Wrench with 3 speed and torque settings that gives you the control to best suit your application. The 1/2in (13mm) square drive with detent pin allows for more efficient torque delivery and excellent socket retention.

Bit Holder: 1/2in Detent Pin
No Load Speed: 0-400/0-1,200/0-1,900/min.
Impact Rate: 0-2,400/bpm
Max. Torque: 950Nm, Breakaway Torque: 1,625Nm.
Max. Bolt Diameter: M20
Weight: 2.62kg

1 x 18V DCF887 XR Brushless Impact Driver is equipped with application control. This is achieved through 3 motor speeds and torque settings. Precision Drive mode offers additional control in screwdriving applications to avoid material and fastener damage. It has a super lightweight and compact design.

Bit Holder: 6.35mm (1/4in)
No Load Speed: 0-1,000/0-2,800/0-3,250/min.
Impact Rate: 0-1,800/0-2,900/0-3,800/bpm
Max Torque: 26/80/205Nm
Weight: 1.56kg

Also supplied with: 2 x 18V 5.0Ah Li-ion Batteries, 1 x XR Li-ion Charger and 1 x TSTAK VI.