Box of 10 x HSS Gold Cobalt Jobber Drill Bit for Stainless & Hard Steels. Drills. (3mm x 63mm Cobalt Jobber Drills)

Does the job on steel great ; well worth the money

These were purchased to use on stainless steel but blunted extremely quickly. Not suitable for my requirements.

Bought these as I regularly use a 3mm bit to start holes when drilling hard steel, and consequently I break 3mm bits more than any others.These bits are extremely tough and they cut through hard steel effortlessly! My first one in use has cut dozens of holes so far and hasn’t lost its sharpness at all. Also cuts faster than the Heller Cobalt bits I was using (and breaking) in the past too!Highly recommend these, I will stock up so that I don’t run out!

These drill bits are fantastic, Drills like a hot knife through butter.

Well worth the risk , I've bought so many drill bits in my time, big box sets, singular, and this lot of 10 which when buying you think why supply 10 are they no good! Well I was wrong, I bought these to drill just one hole, that being on an expensive watch case made of stainless steel. I repair watches and where I think there should be an improvement I will do just that . The hole had to be accurate, I did it by hand, to my surprise it cut the steel like a knife through butter. I was impressed because the bit had not lost any of its sharp leading edge. The hole was for a screw down crown mod, which went to plan. I'd recommend these drill bits to anyone, to cut through stainless steel they have to be good. Ten out of ten for me.

Used these drills for pre-drilling prior to tapping holes in mild steel. To date they seem to be performing OK. Grind on drill seems to be good.

No dislikes.Good quality drill bits for the price.

Bits lasting a long time