Irwin 10502519 HSS Cobalt Drill Bit 3.5mmThis HSS Cobalt drill bit from Irwin is designed for precision drilling. Suitable for a range of applications, it offers durability and performance.Features HSS Cobalt construction for strength and longevity 3.5mm diameter for specific drilling tasksSpecifications Brand: Irwin MPN: 10502519 EAN: 5706915000610 Diameter: 3.5mm Total length: 70mm Working length: 39mm