Quantity: one piece Color: silver Product size: the picture shows Material: The solid door lock is made of stainless steel and zinc alloy, which is strong and durable, with heavy weight weighing 326 grams, providing reliable security.Keyless Security: Four-digit setting offers 10,000 possibilities, providing convenient keyless security without worrying about keys.Outdoor Use: Sliding rod is made of stainless steel, the lock body is made of zinc alloy, and the surface coating protects the lock from rusting. Tamper-proof: Equipped with a one-way stainless steel lock for products with security requirements, which does not can only be locked one way. MULTIPLE USES: Door locks are specially designed for security applications on doors, cabinets, wooden locks, kennels, sheds, bedrooms, etc. Steps to change password: Step 1 : Change the password based on the initial password 0-0-0-0 correct password Step 2: Pull the slide switch all the way, then lift it up Step 3 : Turn the password wheel to set the number you want, for example: 1-1-0-0Step 4: Do not move the set number, rotate the joystick to the origin, and the password is set successfully.