Safe & Convenient: 4 digit combination password means 10,000 unique combinations, which is difficult to crack for the thief. Remember the password, and you no need to use the key. Resettable: The 4 digit combination is easy to reset as needed and well remembered. Humanized Design: Portable, and convenient to view the combination with the side window design. Widely Used: Perfect for most light-duty tasks such as cupboard, cabinets, luggage, campus, toolbox, fence, storage, gymnasium and so on. Specifications: Shackle size: 1/4'' Material: Steel and Zinc Alloy Unit Dimensions:1.73 x 3.15 x 1.18 inches Color: Black Note: Before you open the lock, the number should be well aligned with the scale line. When you set the password, the shackle should be pressed to the end completely. Otherwise, it will lead to a disorder of new password and cannot be unlocked. Please make sure the numbers are completely in the window when setting a new combination. Please remember your new combination code you have set. Package Included: 2 * Combination locks 1 * User manual