KEYED ALIKE/COMBO PACK: All keys are the same, all locks you received can open with the same key, minimize keys in your home;
PASSAGE LOCK: Keyless(no keyhole), neither lock from exterior and interior of the door, suit for children room, kitchen, living room, hall, bedroom ect;
PRIVACY LOCK: Keyless(have thumb button inside), could be locked inside, and could unlock from outside for emergency;
Dummy: no-function, just used as the door handle/pull;