IRWIN® HSS Cobalt Drill Bits are an ideal choice for drilling stainless steel and other high alloys. These drill bits feature a 135° split point grinding that guarantees precise centring and reduced drilling pressure. Additionally, an industrial quality ground flute ensures high accuracy drilling and fast removal of chips.
The drill bit body is crafted from high-quality HSS steel that contains 5% cobalt (Co). The inclusion of 5% cobalt enhances the red hardness (heat resistance) of the drill bit, resulting in a significantly extended lifespan. Furthermore, the drill bit boasts an appealing golden tempered surface finish.
All the sizes you need in a handy carry case. Contains the following sizes: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 5, 5.5, 6, 6.5 and 7mm.
