General description The Set of 4 HSS-G twist drill bits Ø 16 x 178 mm from BOSCH is designed for solid drilling in various materials, including alloyed and unalloyed steel, non-ferrous metals, cast iron, plastics, and wood. These drill bits feature a 135-degree self-centering split-point tip that ensures precise hole placement without wandering, making them ideal for construction workers and installers. Technical specifications Diameter: 16 mm Length: 178 mm Material: High-speed steel (HSS) Tip design: 135-degree self-centering split-point Shank type: Cylindrical shank compatible with three-jaw drill chucks Other information Ground for strength, heat resistance, and precision Designed for standard usage with metal