SwissGear TSA-Approved Travel Sentry Combination Luggage Lock with Resettable Combo and Inspection Indicator, Red, One Size Lock uses a resettable 3-digit combo that you can assign. Special code allows TSA screeners to open and re-secure your lock without destroying it. Red indicator ring pops up when lock is opened for inspection. Easy-to-use combo lock has no keys to keep track of.