Single Cylinder Deadbolt: The deadbolt can be opened and locked with a key from the outside and a rotary knob from the inside, making it ideal for both interior and exterior doors.<br> Same Keys for All Locks: If you purchase a multi-set (maximum 12 sets, if you need more, please contact customer service), a nickel door lock and a single cylinder deadbolt, they will all have the same keys. All bolts and locks will have the same key, making it easy to keep track.<br> Application: This combination of door levers and deadbolts will give your home or rental house a new look, you can use them in contemporary/modern, transitional, traditional, Victorian, colonial style decor.<br> Adjustable Steel Latch: The door lever fits doors with a thickness of 35mm to 60mm and is equipped with an adjustable backset distance of 60mm to 70mm.<br> Quality Guaranteed: With ANSI Grade 3 verification, the hardware set exceeds 200,000 cycles, ensuring the quality provided to you. Please feel free to contact us if you have any problems.