t40

What tool is this guy using at 8 seconds in this video, to remove a car seat? I'm guessing it's three pieces- a bit (T40), then a screwdriver type piece with a ratchet thing to turn it. I'd like to get all the bits. Thanks!

Hi all, Need some help swapping out a current T40 Thermostat for a Horstmann DRT2 Got two images below, one of the current wiring into the T40, and the other of the diagram from the DRT2. I HAVE had a look at previous threads on here and other sites, and am getting confused as I can't seems...