5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index.

Had them for over a year and soon to buy another set. For the price I didn’t have high expectations, but it turns out these cut and hold up incredibly well. Great stuff. Don’t forget to order a bottle of tap magic ;)

Great Quality. Great Value.

Working great

These are very good drill bits. They do not wander much and are quite durable. There is a problem with the index, the rivets used to attach then to the box arrived failed. To make it useable I had to drill out the defective rivets and attach the index withdouble nuts and screws.

These are an excellent value. I used one bit to drill 16 holes in 5/8" steel and 60 holes in 3/16" steel. Almost no wear and still sharp! I just bought a set of 1/4" bits from Stroton for another project. VERY pleased! Secret is to not run the bits at a slower speed on a drill press and use light application of a cutting oil (I use a syringe to apply just at the hole location and stop midway to apply a drop in the hole). If you get spirals of metal from the bit the speed is good - if you get dust the speed is too high.

Tough bits. I’m hard on bits and these are standing up to an impatient user

If you want to purchase these drill bits two things to remember they are sharp but brittle and will break off in what you are drilling. And will slow you up when you're trying to get done.

I had some heavy duty drilling projects but had inadequate bits to tackle the jobs. A friend recommended these bits from Stroton so I jumped on them. I like the full set since there is always something that needs a hole of various sizes. Their warranty is something else and comments by other customers make it clear that Stroton lives up to their promises. For a US made product, who would not want to buy these bits? Thanks, Stroton.

no perforaron inoxidable 304

Been using these to drill steel at work and I'm impressed . Haven't had any break yet and they seem to stay sharp . Nice little case as well

good buy

Very good, sharp

Dollars to drill bits these are amazing. Compared to my Viking grill bits I see no difference in performance. These are now my everyday drill bits use in the shop.