The 18-Volt ONE AirStrike 18-Gauge Brad Nailer features AirStrike Technology, which eliminates the need for noisy compressors, bulky hoses, or expensive gas cartridges. This means faster setup and easier maneuvering on the job site. The AirStrike Brad Nailer drives 18-Gauge nails from 5/8 in. to 2 in. long. The 18-Volt ONE Lithium-Ion Cordless AirStrike 16-Gauge Cordless Straight Finish Nailer also features AirStrike Technology, and drives 16-Gauge finish nails ranging from 3/4 in. to 2-1/2 in. long. The battery in this kit features lithium-ion battery cells, providing the user with up to 1.5 X more runtime compared to Ni-Cd counterparts. The battery is engineered to deliver fade-free power for maximum performance. The 18-Volt ONE Dual Chemistry IntelliPort Charger is compatible with all ONE lithium-ion batteries and features IntelliPort Technology to maximize the of your batteries. of all, this kit is part of the ONE Worlds Largest 18-Volt Tool System*.