Get the job done with this high performing Hitachi cordless hammer drill. The brushless motor gives this drill increased power and longer battery run time per charge so it can handle larger workloads with efficiency. The two-speed gear box with all metal gears gives you maximum performance and resilience, while the 22 stage adjustable clutch allows you to have precise adjustment when you are driving screws. The 13mm single sleeve metal keyless chuck with automatic spindle lock gives you effortless usability. For added safety this drill features Reactive Force Control that senses if the bit locks and reduces the power output to reduce kickback, alleviating the danger that is caused by high torque. This hammer drill is compatible with all Hitachi 18V Lithium Ion slide-style batteries.