The line of cordless tools uses the industry's most advanced Lithium-ion technology. This gives the battery greater life and more run time, all in a lighter package. The lightweight design of the PS31 is ideal for easy handling in overhead operations and tight spaces. The Bosch 12V Max drill/driver lets you tackle professional jobs with ease. The PS41 12V Max impact driver offers the precision of variable speed, a light body, and a short head length.