Closed end racheting wrenches. So freaking handy all over the bike, but especially on bolts where there's just not enough clearance to get even an adjustable wrench in there. One example are the bolts that attach the GEBE engine to the GEBE lower mount strap. With the closed end ratcheting wrenches you can make sure those bolts are nice and tight during your bike inspection without removing the wheel.
I've seen them.Their rather expensive but unfortunately the ones i saw were only for tightening....yours are better because they look to have forward and reverse.....nice.
If they don't have a switch for on and off, you only have to flip the wrench (spanner) over to reverse the direction.