The Makita DBN500 LXT Brad Nailer is powered by an 18V Li-ion battery (NOT supplied). The compressed air (generated by piston action linked with DC motor) moves the driving guide. The mechanism provides less reaction force and air nailer like shot feeling to the operator. Its slim nose allows for better visibility for easy access to the point you aim at. Enables user to shoot nails into tight spaces. The rocker switch allows you to select between sequential and bump fire mode. It also features an LED job light for visibility in dark work areas. Comes as a Bare Unit, No Battery or Charger. Specification: Magazine Capacity: 110 BradsFires: 18 Ga Nails: Length: 15-50mmShots Per Battery Charge: 1,000Weight: 3.2kg