The Milwaukee M18 ONEID2 ONE-KEY™ FUEL™ 1/4in Impact Driver is the fastest, most compact and most powerful tool in its class. The brushless POWERSTATE™ motor delivers up to 30% faster driving speed, increasing user’s productivity for the most demanding fasteners on the job. The 4-Mode DRIVE CONTROL™ provides greater control over output speed and power, for greater versatility. The self-tapping screw mode provides faster installation time by reducing stripping of fasteners. The REDLINK PLUS intelligence ensures maximum performance and protects from overloads, heating and over-discharge. Comes with Milwaukee ONE-KEY™ Technology. Connects via Bluetooth® with the Milwaukee® ONE-KEY™ app. Allows for complete tool customisation, up to 4 custom settings to the tools memory for fast selection on the jobsite. M18 ONEID2-502X: 2 x 18V 5.0Ah Li-ion BatteriesM18 ONEID2-0: Bare Unit, No Battery or Charger Specification: Bit Holder: 6.35mm (1/4in)No Load Speed: 1,900/2,800/3,600/0-3,600/min.Impact Rate: 1,200/3,400/4,300/0-4300/bpmMax. Torque: 119/176/226/0-226NmMax. Bolt Diameter: M16The Milwaukee M18 ONEID2-0 Next Gen ONE-KEY™ FUEL™ Impact Driver is supplied as a bare unit, no battery or charger supplied.