Complete Package Content: You'll have everything you need for a hassle-free installation! Our kit includes an exterior door knob, an interior door knob, screws, an adjustable latch, 3 keys, a strike plate, installation accessories, and detailed installation instructions to ensure you can easily install this door knob with lock. Multi-Functional Adjustable Latch: Our all-metal adjustable latch design is suitable for standard doors, compatible with backset sizes of 2-3/8 inches to 2-3/4 inches (60-70mm) and door thicknesses ranging from 1-3/8 inches to 2 inches (35-50mm). This product is perfect for use as a front door lock, backdoor lock, or bedroom door lock, providing ideal privacy protection and security. Easy Installation: Say goodbye to complicated installation processes! Our detailed installation instructions allow you to easily install the door knob and door lock using just a screwdriver in just a few minutes. Important Note: The screws on the door knobs are preset; please be sure to remove them before installation. Robust Security and Durability: Our door knob with lock is made from high-quality stainless steel with a plated finish, ensuring they are not only durable but also stylish. This door lock is designed to offer robust security for your home. To avoid locking issues, please ensure the key cylinder and thumb turn button are aligned and insert the cylinder into the small hole behind the button. Customer Support: We highly value your experience and have full confidence in our product quality. If you encounter any issues while using the door lock or bedroom door lock, please feel free to contact us, and we will be happy to assist you in resolving your concerns. Elevate your home's security and style with our premium Brigligh High-Security Stainless Steel Round Ball Door Handle. This modern, gold-finished door knob with lock is crafted from robust stainless steel, ensuring durability and a sleek, polished look. The multi-functional adjustable latch is compatible with standard doors, fitting backset sizes of 2-3/8 inches to 2-3/4 inches and door thicknesses ranging from 1-3/8 inches to 2 inches. The kit includes an exterior door knob, interior door knob, screws, adjustable latch, 3 keys, strike plate, installation accessories, and detailed instructions for easy, tool-free installation. The mortise key lock provides robust security, while the plated finish resists corrosion and maintains a stylish appearance. Upgrade your entrance, front door, or bedroom door with this high-quality, easy-to-install door handle set.