Faithfull Cobalt Quick-Change Impact Drill Bits are designed to deliver superior performance and durability for various heavy-duty industrial applications. These drill bits feature a revolutionary tip design with seven cutting edges and 3 peaks providing super-accurate self-centring. They allow you to make a hole in a round pipe with one hand. They are twice as fast as split-point drill bits and offer up to 10 times longer life in mild steel making them a cost-effective choice for professionals.Manufactured from M35 HSSE grade steel with a 5% cobalt content these drill bits offer increased heat resistance and exceptional cutting performance leaving fewer defects (burr) than other drill bits. The protruding centre tip acts like a pilot drill ensuring precise positioning and preventing the drill from wandering. These impact-rated bits feature a 1/4in quick-change shank for use with impact drivers and are manufactured to DIN 338 & DIN3126-E6.3 standards for high precision tolerances and geometric accuracy.Ideal for use on alloy steels carbon steels cast iron hardened alloy steels stainless steels high-temperature alloys titanium alloy high-strength steel and carbon fibre composite materials these drill bits are perfect for professionals seeking reliability and efficiency on the job.Included Sizes: 2 2.5 3 3.5 4 5 6 & 8mmPTDFAIQCSET8