Master Lock Travel / Helmet Lock 4688D Set Your Own Combination TSA Approved Luggage Lock, 1 Pack, Silver Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Master Lock Travel / Helmet Lock 4688D Set Your Own Combination TSA Approved Luggage Lock, 1 Pack, Silver Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...