MALAYAS1/4" Hex Shank 12mm/16mm/19mm Countersink Drill Bit 5 Flute 90 Degree Woodworking Countersink Bits

Works well. The larger ones are a bit pointless really, I think they would do better just giving us three of the 12mm. If you are using a screw with a head bigger than 12mm you are almost certainly using something other than countersunk.One thing I noticed is that some people complain they create an uneven finish. The way to avoid this is to go slowly. The softer the wood the slower you need to go.

Seem to be good quality for the price, should be ok as I will only be using them on wood.

Do a perfectly adequate job and the hex shank makes it easy to swap them about

Oddly they don't quite fit in my universal bit holder, but aside from that they are decent enough countersink bits for the price. They certainly cut better than the Stanley countersink bits I used previously (the Stanley bits were not old and worn).

Blades are not that sharp.Spend a bit more.They start off fine then they get dull quite quickly.

These work well in either a drill or an electric screwdriver. Not the sharpest but they do the job for wood working. May not be so great for use in metals.

These did the job I wanted them for so I'm pretty happy with them. They are quite sharp too so they give a reasonably clean cut, especially in hardwood.

They arrived quite quickly 1 star for that but ... the moment I handled them I thought crikey.You expect to feel and edge on the flutes but there was hardly any anywhere. Had a piece of wood in the vice and the drill was on the bench so back out into a cold old garage and had a go with them . Yup rubbish. Very very disappointing. Funny thing is while I was waiting for them to arrive I had a go at sharpening my old countersink and managed to get edges back on the flutes. Not machine quality but enough to get a bit of life back into it and I thought maybe I should not have ordered these new ones. I have returned for refund as they are not fit for purpose . You would need to put the edges on yourself and hey that's what you pay for. My advice don't buy.

Very good replacement for old tools. Given these some serious stick and still working like new, couldn’t ask for more.

Good product for wood works well

Good quality product

Not good .. DOES NOT fit a standard size bit Chuck .. strangely .. seems to have been made too large (for Makita anyway) .. works ok in a normal drill Chuck mind you

Have used these on wood and found that more often than not they produce a distorted countersink rather than a smooth finish. Have tried using different drill speeds but still doesn't provide what I would say is a good finish compared to other countersinks I have.

Produce countersunk holes very neatly.

nice countersink for wood