The Bosch GBH 18V-28 C Brushless 18V SDS Rotary Hammer Drill delivers all the power of a corded machine, but without the cord The GBH 18V-28 C delivers an impressive 3.3 Joules impact energy for consistent and versatile performance. The SDS interface ensures effective performance while the drill includes a range of safety features to keep you working as well as safe on site. The easy-to-read HMI displays the tool status and allows the user to choose between three different work modes Auto, Favourite, Soft for perfect control in every job. Thanks to the inclusion of the brushless motor, the Bosch GBH 18V-28 C, as well as delivering 3.3 joules of impact energy, has an impact rate of 4220 bpm as well as no load speed of 950 rpm. It is capable of drilling up to 28mm in concrete, 13mm in steel and 30mm in wood. With a hollow core bit, it could go as deep as 82mm in masonry. Ideal for working with concrete, masonry and stone, this brushless drill incorporates kickback control which reduces the hazard of sudden tool reactions in binding conditions which will shut down the tool to prevent painful jumps. It also includes vibration control to reduce the feeling of fatigue when working over longer periods of time. At the heart of this drill is the brushless motor that allows you to use the tool efficiently. As part of the design, the tool utilizes every bit of battery power when you need, all while reducing the need for ongoing maintenance by reducing the amount of heat generated and working more efficiently. The technology in creating a brushless motor system allows for perfect symmetry between battery power and usage ensuring you get all the power you need, when you need it. The Bosch Expert 5 Piece SDS-Plus 7x Hammer Drill Bit lasts up to 3x longer than a standard drill bit. Drilling through reinforced concrete is a tough job, and it has traditionally taken its toll on drill bits. Regular two-cutter bits get stuck in rebar and they eventually break. The Full Carbide Head on the Expert SDS plus-7X is an advanced 4-cutter design made from a single piece of the toughest metal It doesnt jam and presents no weakness on impact. Thanks to Bosch Carbide Technology and the Full Carbide Head, the Expert SDS plus-7X lasts far longer than regular hammer drill bits. It punches through rebar effectively so there is no need to stop, re-target or change bits when you strike steel.