Tired of managing a whole bunch of keys for your pinball machines, but still have a desire to deny any undesirables access ?

This combination lock solves the issue!

If you keep the combination set to the *open* 3-digit number, it functions as a  keyless/thumb lock.  But if you change the lock to display any digits other than the entry/access digits, it becomes locked to all outsiders.  In short, with a quick spin of the lock's digits, this lock can go from functioning as a keyless lock to functioning as a keyed lock, or vise versa.

Lock comes set to 000, but this number can easily be changed to any 3-digit number you would like.