Large Mail Slot for Doors

Pachislo Slot Machine Door LockKey 3-516 and 50 similar items door slot lock The rears doors have a white key slot for the childproof lock The front & rear doors also have a black key slot What are the black slots door letter slot lock or unlock the door Case- The case is the housing for the latch of the deadbolt It can also be the casing around the key slot locked and will not

door lock slot This door lock slotting machine is used to drill the hinge hole on the wall of wood, aluminum and iron doors or wooden furniture Made of stainless steel