The Bosch PRO 20 Piece Impact Screwdriving and Metal Drilling Mixed Bit Set from ITS is a handy selection of impact rated screwdriver bits and useful drill bits. The screwdriver bits are made from modified steel for strength and added laser markings to help you pick out the bit you need. The drill bits are made from HSS-G material to make sure you can drill in metal with ease. The PRO Impact Metal Set is a great choice for interior fitters and installers who need reliable screwdriver bits and drill bits. The screwdriver bits feature a torsion zone, which absorbs the torque stress at the bits tip, making sure they wont break. The bits have colour-coded rings indicating the head type and laser markings helping you pick out the bit you need. The metal drill bits, made from High-Speed Steel are ground for durability and precision. The set is housed in a sturdy case and arranged in holders you can use to build your own toolbox.