The Bosch Professional Extra Hard Bit Set includes 43 pieces and is specifically designed for demanding applications. The bits are made from high-quality material, enhancing their durability and resistance to wear. This set is ideal for professionals and DIY enthusiasts who need a reliable and versatile solution for various screwing tasks. The bits are housed in a practical box that allows for easy organization and quick access to the tools you need. With a variety of sizes and types, this set covers the most common requirements, ensuring you are well-equipped for any task. The bit set is manufactured in China and meets the high standards of Bosch Professional, known for their quality and performance. This set is a valuable addition to any tool collection.