I took it to unscrew the cover of the coarse water filter. The height of the edges of the lid was literally 3-4 mm - without any problems it was possible to catch and twist.
Pros
Smooth jaws, flat surface, holds nuts/faucets well, worm won't stick, marked in mm and inches.
Cons
Not a grippy handle. The sliding lip plays, although it does not affect the unscrewing of the nuts / taps.