TSA Secure Code Lock: Fashionable, lightweight and convenient design,it is a travel smart combination lock. Suitable for the airport screeners to unlock inspect and relock bags, without damaging the lock. 3-Digit combination can be reset as often as you choose and allows for different combinations. The original number is 0-0-0,you can setting your own combination. How to Use: Dial your numbers to the convex line, pull the shackle to open, then insert the shackle and scramble the numbers to lock, repeat the above to reset. Specification: Material: ABSandMetal Color: Black Size(LxWxH): 72x40x18mm (approx) Suitable for Aluminum Luggage Package Includes: 1 Piece TSA Secure Code Lock 6 Pieces Screws 2 Piece Metal 2 Pieces Plastic