It is a very good drill bit that I like a lot. Managed to make multiple deep holes into ivy chunks which should allow me to put some weedkiller down much more deeply. If the rain ever stops..

These drills are excellent but due to the thread on the tip they pull themselves through the wood so can be aggressive if you’re looking to do some delicate work.

If you just want to make a hole in wood and speed is important to you, you can’t get better than these!

Forget all the ads for fancy multi toothed drill bits.

These are superb. They have a screw head that drives the tip of the drill into the wood as it cuts, so you get a fast cut, secure and accurate hole every time.

I wish I had these years ago.

only part way through my second hole did I realise how these work properly. I read the blurb and watched the videos but it needs to actually happen for you to understand it. The threaded tip has to bite into the wood and pull the bit through. This means it goes through the wood MUCH faster than a standard spade bit. however as it does this the side points engage – which is where the speed comes from – at this point a lot of torque is needed to keep it moving otherwise it jams. drilling through joists with the 30mm bit requires some force to get the thread to engage and then a lot of strength to hold the drill against the torque , particularly worse when also using a right angle adapter. hard to find the right balance of slow speed (control, not jamming, handle the torque) and just fast enough to pull through . But with the right torque and right speed and hold just the right amount of pressure, it was probably 10x faster than previously drilling the same distance through a joist with a “normal” spade bit.

don’t use them for anything other than wood. holes in plastic sheets or pipes, use something else.