Just twist the collar ring and this tool will change from a standard cordless drill to a hammer drill.

The rotary-only mode is for general purpose drilling and driving fasteners. Use this mode with standard drill bits for wood and metal as well as masonry drill bits. In rotary-percussion mode, the tool provides both a rotary drilling and hammering action. The hammering action pounds concrete and masonry, which breaks up the material while it drills. Use this mode for drilling masonry materials using carbide-tipped masonry drill bits.

This drill has a keyless chuck for fast bit changes. It has a variable speed—the further you depress the trigger, the faster the drill rotates. The adjustable clutch lets you adjust the torque.

A lithium ion (Li-Ion) battery (sold separately) powers these cordless drills, which means they weigh less and have a longer run-time than cordless drills that use nickel cadmium (NiCad) batteries.