IRWIN® – HSS Cobalt Drill Bit Set, 15 Piece. IRWIN® HSS Cobalt Drill Bits are perfect for drilling stainless steel and other high alloys. Their 135° split point grinding ensures perfect centring and reduced drilling pressure. An industrial quality ground flute ensures high accuracy drilling and fast removal of chips. The drill bit body is manufactured from high-quality HSS steel containing 5% cobalt (Co). The added 5% cobalt improves the red hardness (heat resistance) of the drill bit and results in significantly extended life. It has an attractive golden tempered surface finish. This 15 Piece Set contains the following sizes: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10mm. A surcharge is applied to orders outside of mainland areas. We use various couriers for UK & Worldwide orders, all orders are sent out using a tracked service. All orders are dispatched within 48 hours of being cleared. We cannot provide any additional information as these policies vary widely dependant on the country. An invoice is provided for all orders. With over 11,000 products don’t forget to check out other items in our shop! If the item is not required, ensure it is in original condition, unused with its original packaging. Return address – London, United Kingdom. For products that are faulty on receipt, please notify us within 14 days via the messaging system. Welcome to CamdenTools, and thank you for visiting! We offer a comprehensive range of tools, materials, products and accessories for customers both in the UK and worldwide, all backed up by our excellent customer service. Here at Camden Tools, we pride ourselves on offering a huge selection of over 11,000 products, including all of the top brands from both the UK and further afield. Our dedicated customer service team are always on hand to offer help and advice too, so please feel free to get in touch if you need help at any time! On all UK orders. Add to Favorites.