Kwikset 554MNH SMT Montara Two-Point Locking Double Cylinder Handleset with Smar, Satin Nickel Exterior Double Cylinder : Keyed on the inside and outside, no thumb turn. Double cylinder locks are keyed on both sides of the door and can only be locked and unlocked via a key. Please check local codes before installing The Kwikset 554 Series Double Cylinder Handleset is an EXTERIOR pack ONLY, This is for customizing your door hardware, a Kwikset 979 Interior Pack of your choice is required for a full Lockset