Metal drill bit set - HSS-R (roll-rolled). 25 pieces. The powerful universal drill bit is a robust twist drill made of high-speed steel, featuring high elasticity and a low risk of breakage thanks to hot-formed production. It is universally suitable for a wide range of metals and hard plastics, making it ideal for precise drilling in iron, steel, non-ferrous metals, grey cast iron, and hard plastics. This set includes 25 twist drills made of high-speed steel for use in both hand-held and stationary drilling machines, offering a long service life and low risk of breakage due to high elasticity. The drill bits are compatible with all power tool brands, with diameters increasing in 0.5 mm steps from 1 to 13 mm. The contents of the set include 25 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, 10, 10.5, 11, 11.5, 12, 12.5, and 13 mm. Note: Use of coolant is recommended. Safety note: Please wear protective goggles when using.