Up to 5x more accurate than a Bosch CYL-3 drill bitOn a modern construction site, many different materials are used, and you never know what you'll need to drill next. Finding the right drill bit can be difficult and time-consuming, unless you have the EXPERT Multi Construction drill bits.Thanks to their sharp tip and advanced design, these extremely versatile drill bits can drill accurately and without slipping into hard materials, such as granite. Made from optimized carbide and with our fine grinding techniques, they can also handle concrete, brick, soft tiles, wood, and metal. They always deliver a professional result, regardless of the material.The Bosch EXPERT HEX-9 Multi Construction drill bits are the drill bits you should always have at hand: you'll never have to stop or waste time again because you don't have the right drill bit. This set comes in a plastic holder that can be clicked into a Pick and Click case, allowing you to store the drill bits safely and personalize your toolbox.Hex shank for a strong connection and maximum torque transfer in three-jaw chucks and ¼" internal hex tool holders