The Bosch CLPK223-181 Cordless tool kit offers a 18 V 4.0Ah long lasting battery. The impact has a brushless motor. It is also ready for a 1/4" driver and a 1/2" socket without any adapters required. The drill has a 1/2" metal chuck and gears unlike many other tools that are only a plastic chuck and gears. Both tools offer a Brute Tough casing which allows the tools to stand up to the toughest jobs.