The Hitachi W6V4 6.6-Amp Drywall Screw Driver offer a heavy-duty 6.6-amp motor that produces a maximum torque of 81.5-inches per pound. The motor rotates 4,500-times per minute and the removable nose piece makes changing bits easy. This screwdriver generates a no-load speed of up to 4,500-RPM. The silent clutch reduces nose levels to 76-decibels. Don’t be fooled by its decibel rating, this tool is a powerhouse when it comes to high-speed screwing. Other features include a belt hook perfect for contractors, a removable nose-piece and a silent clutch. At 3.1 pounds, this lightweight screw driver is perfect for overhead applications. The Hitachi W6V4 6.6-Amp Drywall Screw Driver comes with a 1-Year manufacturers warranty. Hitachi Power Tools provides professional-grade power tools for a variety of applications, including woodwork, metalwork, concrete, drilling, cutting and fastening. Since its inception, Hitachi has pioneered innovative technologies that have improved the quality of craftsmanship worldwide. Hitachi is a leader in power tool research and development and has achieved many firsts in the power tool industry. Today, Hitachi continues the tradition of innovation and engineering with new features in addition to classic quality.