The Makita DUC405Z 36v Twin 18v LXT 400mm Brushless Chainsaw features a main power switch with auto power off function which avoids unintentional startups. The main power switch will automatically shut down when the switch trigger is not pulled for a certain period after the main power switch is turned on. The captive nuts feature prevents loss of nuts when removing sprocket cover to replace the guide bar or saw chain. Features and Benefits: Captive bar nuts for solid bar retention Variable speed trigger 18Vx2 Brushless motor provides chain Speed of 1,200m/min Adjustable chain oiling Metal spike and kickback brake provide additional safety and control Supplied With: 1 x Makita DUC405Z 36v Twin 18v LXT 400mm Brushless Chainsaw Bare Unit 1 x Guide Bar - 165247-4 1 x Chain - 531.291.656 1 x Guide Bar Cover - 419560-5 1 x WrenchBare unit - no battery or charger included