Irwin HSS Cobalt Drill Bits 3.5mm OL:70mm WL:39mm Pack of 10

The IRW10502519 is a 3.5mm HSS Cobalt Drill Bit supplied in a pack of 10, offering a slightly larger diameter option for drilling stainless steel and high alloy steels. This size bridges the gap between 3mm and 4mm applications, providing versatility for general metalworking tasks where precise hole sizing is important. The 3.5mm diameter is commonly used in mechanical assembly, bracket fabrication, and maintenance work. Engineered with 5% cobalt content, this drill bit delivers exceptional heat and abrasion resistance, making it ideal for challenging materials that would quickly dull standard HSS bits. The heavy-duty web construction ensures robust performance, whilst the precision-ground 135° split point begins drilling immediately, minimising bit walk and ensuring accurate hole placement every time. Features and Benefits: • 3.5mm diameter suitable for general metalworking applications • Pack of 10 ensures you have spares for ongoing projects • 5% cobalt content for superior durabili