The Bosch 2607010538 ROBUST Line HSS-G Metal Drill Bit Set is a genuine Bosch accessory designed for precise and efficient drilling in a wide range of materials. This 13-piece set features HSS (high-speed steel) drill bits with a self-centring split-point tip, eliminating the need for pre-drilling or pilot drilling. It is suitable for use with alloyed and unalloyed steel, cast steel, cast iron, sintered iron, malleable cast iron, non-ferrous metals, and hard plastics. The drill bits have a cylindrical shank system, making them ideal for drill stands and drill drivers. The set comes in a durable ROBUST Line case for convenient storage and transport.