Features:

TSA Approved: It allows your luggage to be unlocked and inspected by special authorities without damages to your lock or bag.
Easy To Use: 4-Digit Locks,the original number is 0-0-0, you can setting and changing the combination whatever you want.(There is instruction when you receive these lock)
Durable Material: The 4-Dial TSA Approved Lock is constructed from sturdy zinc alloy, designed to withstand the rigors of baggage handling.
No Key To Lose: There is no key, so you need to remember the password you set.
Multiple Uses: The approved and Transportation Security Administration approved lock can be used for travel or various lockers such as hostels, gym, water parks, etc.

Specifications:
Material: Zinc Alloy & Steel
Size (Approximate): 2.6in x 1.18in x 0.51in
Product Weight (lock only): 2.7 oz
Color: As main picture

Package Includes:
4 x TSA Suitcase Lock

The way to set these locks as followings:
1.The original number is 0-0-0-0. Setting your own combination.
2.Pull up the shackle. (as in the picture above)
3.Rotate the shackle 90° counterclockwise, Hold it down and then continue to turn another 90 ° counterclockwise .
4.Set your own combination by turning dials to the convex line.
5.Turn the shackle back as normal. The procedure is now complete.
6.Dial your numbers to the convex, pull the shackle to open.
7.Insert the shackle and scramble the numbers to lock, repeat the above to reset.