wolfcraft Conical Countersink Set, Ø 12-19 mm, Hexagon Shank, 3 Pcs. I 2584000 I For countersinking of drill holes for flush screw connections in wood, non-ferrous metal and plastic

Work great, much better than the old one I have

Sharp and smooth

Used a couple of times now and the cut is clean and sharp. Leaves a neat seat for screw or bolt head. Let's see how long they stay sharp.

I think the best countersinks are the ones with the diagonal hole cut through them but these are much cheaper and almost as good. The single flue means they cut without chatter, so the countersinks come out round rather than polygonal as you usually get with the more common multi-fluted ones. Main drawback is the hex shanks aren't standard quick-release ones, so you have to use them in a normal drill chuck, which slows you down in use.

These countersink are fantastic. The best I've ever used, with none of the usual rough, tatty edges. Just a perfectly smooth countersunk screw hole.Best I've ever used and highly recommended.

Not used extensively but seem good quality and work well

Easy to use, ok for money, one used on 300 holes in stainless and it's still good, another used on 20 holes in mild and its scored and worn, guessing QC was having day off and let one slide by without hardening.

Sharp and easy to resharpen. annoying that they do not have 8mm locking studs though. They keep dropping out of my impact driver. Silly oversight in their design which would cost no more to implement rather than having to use them with bit holders.