Callaway Travel Sentry Approved Luggage Lock 4 Dial Combination Luggage Lock Features Dimensions 1.13w x 2.69h x .188d Travel Sentry Approved luggage lock uses a special, secure system that allows Transportation Security Administration screeners to open the lock and relock it after inspection Each lock bears a special identification mark, alerting the TSA that they can open the lock without destroying it Sized to fit through locking zipper sliders on luggage and briefcases to secure contents 4 digit combination can be reset as needed If you have any questions about this product or would like to order by phone, please call us Toll Free at 888 733 8383. We look forward to hearing from you!