Features: Material made by good qualith alloy, Durable and Not Rust. With 4 sizes for your choice. 4 digits or 3 digits. Suitable for backpack, cabinet, drawer, luggage, toolboxes etc. Specifications: Material: zinc alloy Color: silver Size: As showed steps : The lock is preset at factory to open at 0-0-0/0-0-0-0, check the 0-0-0/0-0-0-0 aim at the indication line. Pull out the shackle. Turn the shackle 180 degree or 90 degree, then press down the shackle, turn the dials to set your combination. Pull out the shackle return to regular position. Now your personal combination is set, please remember well your new combination. If you want to change it, please repeat steps 1-4. NOTE: For different monitors, the color may vary slightly. Besides, please allow some errors of manual measurement, thank you for your understanding! Package Includes: 1 X Combination Lock (4 digits or 3 digits)