HSS-R Metal Drill Bit Set (rolled). 19 pieces. The powerful universal drill is a robust spiral drill made of high-speed steel that offers high elasticity and a low risk of breakage thanks to its hot-formed production. It is universally suitable for a variety of metals and hard plastics, making it ideal for practically any task. This metal drill bit set allows for precise drilling in iron, steel, non-ferrous metals, cast iron, and hard plastics. The drill diameter increases in 0.5 mm increments from 1 to 10 mm. The set includes 19 high-speed steel spiral drill bits for use with both handheld and stationary drilling machines, ensuring a long lifespan and high elasticity for a low risk of breakage. The sturdy metal case provides clear storage and protection for the drill bits. It is universally applicable and compatible with all brands of power tools. The contents of the set include 19 HSS-R metal drill bits with diameters: 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, and 10 mm. Note: The use of coolant is recommended. Safety note: Please wear safety goggles when in use.