[Smooth and Sturdy]:This lock is made with high precision manufacturing process,ensuring smooth for operation and long lifespan [Feature]:The lock core is made of pure copper,which does not rust and provides solid durability [Wide Application]:Suitable for various types of door locks including front doors,wooden doors,iron doors,etc [Material Size]:Made from metal and copper materials,this lock measures approximately 9cm in length [Package Includes]:Each package comes with 1 set of exterior door locks and 3 pieces keys for your convenience, Weight: 0.9700339528 Pounds, Manufacturer: YIXANNX