Makita built outer rotor brushless motor direct drive system for high power and sped equivalent to a 30cc gasoline chainsaw. XPT/eXtreme Protection Technology offers maximum protection against dust, debris and liquids for optimal performance in extreme conditions. Zero emissions for operator comfort. Captive bar nuts for chain tensioning. Includes: Tool only. Batteries and charger sold separately, 16" chain, 16" guide bar, chain cover, spike bumper, box wrench, oil supply.