1.4-DIGIT PASSWORD DESIGN: Our combination padlock is designed with a 4-digit code, you can have 10,000 combinations of codes, which is 10 times longer than the time it takes to decipher a three-digit code lock, can effectively stop theft and greatly improve security, giving you more peace of mind. In addition, the use of advanced damper makes the combination setting of this padlock more accurate, and the points of the combination will not change easily. 2.LIGHTWEIGHT AND PORTABLE SIZE: The length of this luggage combination lock is 8cm/3 inches, width is 4.3cm/1.7 inches, thickness is 2cm/0.8 inches, compact size, suitable for a variety of applications, such as luggage, backpacks, lockers, toolboxes, bike locks etc. Especially suitable for short-term storage and medium security needs scenarios, such as gym lockers, student dormitories. 3.STRONG AND DURABLE: The body of this padlock is made of high-quality zinc alloy, and the padlock ring is made of stainless steel, the whole is sturdy and , not easy to be cut easily, rust-proof, and waterproof, which is exactly the ideal choice for when you need to use it outdoors. We provide you with two sizes, 2pcs pack and 4pcs pack, you can choose the quantity you need according to the different use scenarios. 4.SIMPLE OPERATION: The initial password of the combination lock is 0-0-0-0, after you open the combination lock you turn the lock ring counterclockwise by 90 degrees, press down after the card point is stuck into the slot, then turn counterclockwise by 90 degrees to re-enter your password, and then the hanging ring to its original position. Please refer to the attached instruction manual for detailed operation.