RX HSS-G Cobalt drill bit set, 10 pieces. The highly durable drill bit is made of heat-resistant 5% cobalt alloyed high-speed steel, suitable for all metal applications. 135° cross-sharpened tip reduces blade wander and allows precise starting. Variable flute geometry ensures faster drilling and longer life by removing chips more efficiently. HEX shank provides a better grip and reduces slippage for maximum power transfer. Engraved shank length for easy size identification. Ideal for drilling metal. Set includes sizes: 1, 2, 2.5, 3, 4, 5, 5.5, 6, 7 and 8 mm. Supplied in LINK-compatible plastic case. Part of Ryobi's RX range of accessories.