HDH181BL Bosch 18V Brute Tough Hammer Drill Driver w/ L-Boxx Carrying Case, Bare Tool Bosch’s HDH181BL Bosch 18V Brute Tough Hammer Drill Driver w/ L-Boxx Carrying Case, Bare Tool is a combination of maximum power in a compact, lightweight design. HDH181BL Bosch 18V Brute Tough Hammer Drill Driver w/ L-Boxx Carrying Case, Bare Tool features a new patented gear train and clutch creating the most compact design in its class. This patent also allows this HDH181BL Bosch 18V Brute Tough Hammer Drill Driver w/ L-Boxx Carrying Case, Bare Tool to be the lightest weight in its class. With a four-pole motor, the HDH181BL performs with maximum power. Battery and charger sold separately.