The Bosch Drill & Screwdriver Bit Set is a versatile and powerful set, perfect for home use and on the job site. This set is perfect for drilling and fixing wood, masonry and metal, and includes metal drill bits with high performance titanium nitride coating to ensure that the tools are durable and long-lasting, whilst promoting high performance. The set also includes masonry drill bits, as well as screwdriver bits and nutsetters for secure attachments and fixings, ensuring that you have every piece you need for your projects. The set includes 11 metal drill bits, 11 masonry drill bits, 8 wood drill bits, 49 screwdriver bits and 1 manual screwdriver.Set contains:11 metal drill bits 2-8 mm with titanium nitride coating. Up to 40% faster drilling progress than with comparable drill bits without titanium nitride coating. Up to 6-times longer service life when used with proper cooling.11 masonry drill bits 3-10 mm with carbide tip suitable for hammer drilling in masonry, limestone, natural stone and cast stone.8 wood drill bits 3-10 mm with centering tip. For hardwood, softwood and plastic.49 screwdriver bits with Phillips, Pozidriv, Torx, hexagon-head and longitudinal slot screw heads in all standard sizes, as well as 8 Nutsetter for all screw applications.1 manual screwdriver with ratchet function for screw fittings and 1 magnetic universal holder for fast bit changes and a reliable screw hold in the bit.