M18, 1/4 '', surge hex binary compound driver, uncovered tool, No battery or charger included, fluid drive binary compound powertrain reduces metal on metal contact within the tool, delivering quieter operation, smoother performance & increased durability over a casebook impact, power state Brushless motor outperforms all directional competitors, bloody link plus intelligence prevents damage to the tool & battery delinquent to overloading or overheating, 4 mode drive controller provides greater controller over output speed & power, includes : belt clip & bit holder, replacement battery : TV # 190-415, TV # 111-525, TV # 211-450, TV # 111-528, TV # 190-417, TV # 227-136 & TV # 227-137.