Ready for all drilling applications in materials from concrete to wood to metal, the lightweight yet powerful Bosch HDS181 Compact Tough cordless hammer drill/driver's 7-1/2" head length is the smallest in its class, yet it delivers top performance with strong power. Part of the Compact Tough series, the HDS181 works at two optimized speeds--one ideal for high-torque applications (0 to 500 RPM) and one ideal for high-speed applications (0-1, 700 RPM)--and it provides a maximum of 600"-Lbs. of torque. The 4-pole open frame motor and gearbox provide exceptional power. The 18+1 clutch settings included in this Compact Tough model and a variable-speed trigger help match the best speed to the job, so you can achieve precise results. The HDS181's Durashield housing is constructed with ABS/nylon composite, which makes the housing flexible on impact and able to withstand tough job-site conditions. Unlike competitive tools, which use a conventional plastic housing, Durashield will not crack and can easily withstand 10 Ft. drops. The ratcheting single-sleeve 1/2" keyless chuck makes bit changes simple and quick with one hand. The ergonomically designed handle and soft-grip wrapped housing offer a comfortable fit for extended working time. And for even greater convenience, LEDs provide illumination when working in dark or enclosed areas. Great benefits of having the lightest, most compact and comfortable heavy-duty 18V drill with Bosch. Battery and charger sold separately.