General description The Bosch PRO Metal HSS-G Twist Drill Bits are ideal for construction workers and installers seeking durable metal drill bits. They are designed to effectively drill into a variety of materials including alloyed and unalloyed steel, non-ferrous metals, cast iron, plastics, and wood. Technical specifications Diameter: 3.5 mm Length: 39 mm Overall length: 70 mm Material: High-speed steel (HSS-G) Usage Suitable for drilling in various materials such as steel, non-ferrous metals, cast iron, plastics, and wood. Features a split-point tip for precise hole starting.