The DEWALT DCK264P2T XR Nailer Twin Pack, contains the following:

1 x 18V DCN660 Cordless XR Brushless Second Fix Nailer has a compact, lightweight and ergonomic design makes the tool easy and comfortable to use, but durable enough for the worksite environment.
The depth of drive can be easily adjusted using the handy thumb wheel depth adjuster.

Specifications:

Nail Diameter: 1.6mm.
Nail Length: 32 - 63mm.
Magazine Angle: 20 degree.
Magazine Capacity: 110 Nails.
Weight: 2.7kg.

1 x 18V DCN692 Cordless XR Framing Nailer with two speeds to optimise the nailer for firing all lengths of nails.
With brushless motor technology for excellent power and tool-free jam clearance to minimise down time. Suitable for many applications, including stud wall insulation, roofing, floor board and cladding installation etc.

Specifications:

Nail Diameter: 2.8-3.3mm.
Nail Length: 50-90mm.
Magazine Capacity: up to 55 nails.
Firing Mode: Bump and Sequential.
Weight: 4.1kg.

1 x 10.8-18V DCB115 Multi-Voltage XR Charger.

Also supplied with 2 x 18V 5.0Ah Li-ion Batteries and 1 x TSTAK Mobile Storage Box.