- Versatile set of 17 drill bits for metal, stone, concrete, and masonry - 12 high-speed steel (HSS) drill bits with titanium coating for maximum durability - 5 tungsten carbide drill bits, heat and wear resistant - Centering tip ensures precise and accurate drilling - Includes diameters from 1.5 to 6 mm for metal and from 3 to 10 mm for stone - Compact and sturdy case with labeled compartments for easy identification - Perfect for DIY, assembly, renovations, and repairs at home or in the workshop - Enables professional and fast work on any surface