Irwin Tools 3016129 Single High Speed Review

This drill bit is a game changer in the Industrial and Scientific industries. It powers through metal and wood with ease, making drilling effortless. The high-speed steel keeps the bit sharp and durable for extensive use. However, it is only suitable for precision drilling and cannot be used for heavier jobs. Overall, a solid investment for any industry professional.

I received an Irwin 73829 29/64 HSS bit instead of the cobalt bit I paid for. Revain will do the right thing, but always test your items before using them.

I used them to fit heli coils in a cast iron engine block. Actually they are too good for this application. Drilling a smaller pilot hole would eliminate this problem. I bought 2 in case one got dull or broken but each hole only lasted about 30 seconds with no damage.