Snappy 5-Piece Countersink & Drill Set for No4-No12 Gauge Screws, Quick Release, Pilot Holes & Countersinks in One Go, SNAP/CS/SET

Black part is finest, that does the job, but the silver drill bits are lacking. They manage pine and little else. First time using on beech and the bit clogged, overheated and snapped. I think you need to plunge a few times to clear the debris. Or even make a pilot hole for it, which kind of defies the point. Bits are short as well, doesn't cover long screws. I have many trend products that are good quality but this is not one of them.

As with all TREND products they are expensive.

First set of these so nothing to compare to but did the job nicely so far. Handy that the drill sizes supplied pretty much match my hinge drill set so I can pilot with the hinge drill and then drill trhough and countersink with these.

Seems ok but I haven't used them yet but they seem a sturdy bit

These countersunk drill pieces seem ideal in saving time and have been ok when used on soft wood. I have yet to try them on hard wood so not sure how they will hold up or if they will break due to there strength.

No better or worse than other makes

I burnt all these out in 1 day doing chipboard tongue and groove flooring. Got a carbide steel one instead paid 30 pounds but will outlast 100 of these.

Found these really useful for quick progress on some new garage and storage cupboard shelving that didn't need particularly high quality finish. As they only have two blades as opposed to multi blades on dedicated counter sinks they tear up the wood a little.