The most fucking useless object to put on a door to open it close it!!! Just stick to handles.
Person 1: bruh I can't open this door!!!
Person 2: I know.... you gotta twist it like a little to the right, then jiggle it to the left and then punch full force next to the lock and it will come open.
Person 1: it didn't work, this doorknob sucks... You should get them all replaced with handles.