It also has a speed pre-selection feature that enables you to set the optimum speed for the material being drilled. Additionally, it has a built-in vibration control system that reduces the strain on your hands during operation. SDS-Plus Chuck: The GBH 2-26 DFR has an SDS-Plus chuck system that allows for quick and easy bit changes, as well as improved power transfer from the drill to the bit. Hammer Function: The drill features a hammer function that enables it to drill through tough materials like concrete and masonry. Chisel Function: The drill also has a chisel function that allows it to be used for light chiseling and demolition work.Other Features: The drill comes with a depth stop for accurate drilling depth, a rotating brush plate for even power distribution, and a reversible function for removing jammed drill bits. Overall, the BOSCH GBH 2-26 DFR is a reliable and durable tool that can handle a range of drilling and chiseling tasks. Its variable speed control, SDS-Plus chuck, and vibration control system make it a versatile and user-friendly option for both professionals and DIY enthusiasts.