Black & Decker 2 speed hammer drill require a power supply of 18V, 1.5Ah 650 RPM. The 2 speed 400/1400 RPM is an adequate power and speed which can be used efficiently for household DIY projects and for robust tasks as well. The lightweight and compact design of the drill along with a battery jjnstalled enables it to fit into tight spaces, portable and easy to store. Moreover, there is a LED light at the base of the drill which will help you to illuminate dark places. In order to prevent the materials and stripping screws 11 position clutch are present. And it comes with a two years warranty.