The Bosch 18V SDS-plus® hammer drill kit includes a lightweight, portable hammer drill with exceptional weight-to-weight ratio and performance and efficiency. Powered by a 18V 4.0 Ah FatPack battery, the hammer can drill up to 100 1/4 "diameter and 1 1/2" deep holes in concrete. With a punching energy of 1.3 ft-lb and a rated idling frequency of 0 to 5,850 BPM, it is extremely powerful. It offers three modes of operation: piercing with percussion, piercing without percussion and perforation only. This drill is compatible with Bosch PRO + GUARD ™ solutions: a complete vacuum system that helps users comply with OSHA regulations for silica dust.Powerful, compact cordless rotary hammer – features drilling performance plus chiseling in a lighter tool, to allow great productivity and efficiency in concrete and masonry applicationsLightweight design, at only 5.7 Lbs. (tool only, not including battery) – for great performance-to-weight ratioEfficient 18 V motor – produces 1.3 Ft.-Lbs. of impact energy for professional applicationsRobust power system – produces 0-5,850 no-load BPM and 0-1,800 no-load RPMMulti-function selector – three modes of operation: rotary hammer, rotation only and hammer onlyWorks with Bosch PRO+GUARD™ dust solutions – an end-to-end dust-collection system that helps users move toward OSHA Silica Table 1 dust complianceErgonomic design – provides great user comfort, with a soft-grip handleElectronic Cell Protection – protects battery from overloadElectronic Motor Protection – protects motor from overheating