The basin wrench makes a sturdy and robust impression and fits comfortably in your hand. But when using it turned out that the key is too thick and thus the mother could be only a few millimeters rotated. For tight spaces of Schlüsel is less suitable. Especially when only the mother should be tightened. If the faucet is mounted and this is not plugged in the key can be used to fix the nut. It then has to give the tap be turned ;-). I'll keep the key anyway. The next sink is determined sooo different :-)