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 In. 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 inch-pounds of torque. The 4-pole open frame motor and newly developed gearbox provide exceptional power. The 18+1 clutch settings included in this Compact Tough model and a variable-speed trigger help you 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.