Probrico Flat Black Passage Door Lever With Single Cylinder Deadbolts, Exterior. ?Door Levers Deadbolts?-- Keyless passage door lever and single cylinder deadbolt. For the deadbolt, it could be locked and opened by a key from ouside and a thumb-turn button from inside. ALL pack set deadbolts come with the same keys(12 sets at most, if you need more ones, contact with customer service) ?Application?--This combination of door lever and deadbolts, will give your home or rental house a new look, you can use them in contemporary/modern style room?transitional traditional Victorian Colonialism home decor ?Function??Fits both right handed and left handed doors; Can be unlocked with keys outside and locked with a thum button inside (for deadbolts), suit both interior and exterior doors and meet your security needs ?Steel Adjustable Latch?--The door lever set fits doors with a thickness of 1-3/8 inch to 1-3/4 inch (35mm to 45mm) and is equipped with an adjustable backset of 2-3/8 inch or 2-3/4 inch (60mm or 70mm) ?Quality Ensured?--With ANSI Grade 3 verification, the hardware set exceeds 200,000 cycles ensuring the quality provided to you. Please feel free to get in touch with us if there is a problem