The Bosch PS20-2 is a 10.8V Pocket Driver with 2 Batteries. The PS20-2s Litheon advanced lithium ion battery is can drive 100 3 inch screws per battery charge. The Bosch PS20-2 provides 80 in-lbs of torque providing the necessary power for driving screws. The PS20-2 also features variable speed trigger for sensitive and precise control. A built-in LED light on the Bosch PS20-2 helps to illuminate the work, even in tight and difficult to reach spaces. A reversible drive allows the pocket driver to be equally effective at both driving and removing screws. A built-in quick change chuck on the Bosch PS20-2 allows quick change between bits while preventing bit loss.