The special direct system (sds) drill bit can be used with a percussion drill to drill through hard materials like reinforced concrete. A special type of drill chuck called the special direct system (sds) holds the drill in the drill chuck. By creating a stronger connection that won't slip or wobble, the sds system makes it easier for the bit to be inserted into the drill chuck. Whenever using an sds hammer drill on reinforced concrete, make sure you follow the manufacturer's instructions and that you wear protective equipment (e.G. Goggles, gloves).Despite its durability, this bit can be used on concrete and rebar. Diamond-ground carbide tips provide extra strength and reliability under high loads. Carbide drill bits provide fast cuts under concrete and rebar. The chisel has a long service life thanks to a special hardening process and enhanced brazing. As well as drilling hard rock, like masonry, concrete, bricks, cinder blocks, cement, and more, our sds max chisels are compatible with bosch, dewalt, hitachi, hilti, makita, and milwaukee power tools. The wrong drill size can directly damage the drill, so make sure you choose the right drill size for the job at hand.