The Faithfull 8 Piece Quick Change Hex Shank HSS Cobalt Impact Drill Bit Set delivers professional-grade performance for demanding metalwork applications, combining M35 HSSE cobalt steel construction with an innovative multi-edge tip design. Manufactured from M35 HSSE grade steel with 5% cobalt content, these bits offer superior heat resistance and cutting performance compared to standard HSS drill bits. The cobalt content is particularly valuable when working with harder metals, reducing the risk of tip degradation under sustained use. The tip design features seven cutting edges and three peaks, providing self-centring accuracy that eliminates the need for a centre punch. The protruding centre tip acts as a pilot, preventing the drill from wandering and reducing burr formation for a cleaner finish. Faithfull also claim these bits are twice as fast as split-point equivalents, with up to 10 times longer service life in mild steel. All eight bits feature a 1/4in hex quick-change shank, making them fully compatible with impact drivers for one-handed operation — particularly useful when drilling round pipe. The set is manufactured to DIN 338 and DIN3126-E6.3 standards, ensuring consistent geometric accuracy and precision tolerances across the range. Suitable for alloy steels, carbon steels, cast iron, stainless steel, high-temperature alloys, titanium alloy, high-strength steel, and carbon fibre composite materials. Features and Benefits: • M35 HSSE steel with 5% cobalt for enhanced heat resistance and extended bit life • Seven cutting edges with three-peak tip for accurate self-centring without a centre punch • 1/4in hex quick-change shank compatible with impact drivers • Twice as fast as split-point drill bits with up to 10x longer life in mild steel • Reduced burr formation for a cleaner hole finish • Manufactured to DIN 338 and DIN3126-E6.3 standards for precision tolerances • Suitable for stainless steel, titanium, carbon fibre composite, and hardened alloy steels • Set of 8 bits covering a practical range of common diameters Specifications: Shank Type: 1/4in hex quick-change Steel Grade: M35 HSSE (5% cobalt) Standards: DIN 338, DIN3126-E6.3 Included Sizes: 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 8mm Number of Pieces: 8