Unlike conventional combi drills that rely on two sets of toothed gears that vibrate the drilling bit, the Worx Slammer Drill features a proprietary mechanism with a moving mass that delivers substantial impact energy to the bit. This way, the tool performs nearly as fast as a rotary hammer in reinforced concrete for holes up to 10 mm, where conventional combi drills take forever or even fail. For homeowners, the SlammerDrill is the perfect solution to avoid having to purchase a rotary hammer or a corded, high power percussion drill. For professionals, this means going to the jobsite with one less tool in their bag. Turn off the Hammer function and it performs at the highest level at wood and steel drilling as well as fastening. This tool is part of the expanding Worx PowerShare, one of the most versatile cordless platforms that covers power tools, lawn and garden tools and everyday life products. PowerShare's "One Battery, Expandable Power" means the same 20V battery can be used in multiple configuration to power up 40V and 80V products.