TSA Luggage Lock, Allows TSA Screeners To Inspect & Relock Bags Without Damaging The Lock, 1-5/16" Lock With 4 Dials, Resettable To 10,000 Possible Combinations, Extended Reach, Heavy Duty Shackle Designed For Equipment Cases, 1/4" Diameter Shackle Is 1-7/8" Long, Shackle Is Made Of Steel To Resist Cutting & Sawing.