HPMAISON True 5% Cobalt Jobber Drill Bit Set, 10Pcs 6mm M35 High Speed Steel Twist Drill Bits, 135° Split Point Extremely Heat Resistant for Stainless Steel, Cast Iron, Hard Metal, Plastic, Wood

Only used for a few days and tested most of them. A bit of chattering at high and medium high speed, but nothing too bad. They are quite aggressive and perfect for removing plenty of material from bad welds when doing welding sculptures. The finish will need going over with something smoother though, to get rid of the biting marks it leaves. Definitely wear a face shield and gloves and overalls would be a good idea. I had a t-shirt on and could feel bits of metal firing into my skin while using it. Nothing too bad but not the best idea.I used stone grinding wheels and sanding discs to smooth it over after as well as the diamond milling bits I have to mould everything into a smooth shape and get rid of the grinding look.

These drill bits are amazing.i needed to put some blinds up inside the reveal.n I had to deal wth metal lintels.i had to drill 8 holes.but done ten cus I mucked 2 up.i went through it wth a 4mm bit then 5 mm bit.done all the holes wth the same bits.done it slowly n plenty of lube.wd40

Nicely packed in a neat case. Have purchased before and they lasted well

they're very good

Ideal kit for drilling into tiles etc

They are a very good buy, well worth the money.I have only had my set for a couple of days, but they have worked well on very hard plastic.You can see the plastic is being removed, as soon as you apply the grinding bit.Excellent purchase.

These drill bits did exactly the job I needed them for. Really good value for money and good quality too.

Ok