Weather-Resistant Long-Shackle Padlock with Removable Shackle - Lee Valley Tools
30mm Brass Keyed Alike Padlock with Long Shackle, Small Padlock with Chrome Plated, Weatherproof, Great for Residential Gates & Fences, Sheds, workshops & garages cabinets, toolboxes (24 Pack) - UnityLock.com
Master Lock 517D Laminated Padlock with Long Shackle, Silver, 1.85" wide - Pad Lock - Amazon.com
Premier Lock 2-5/8 in. Premier Solid Steel Commercial Gate Keyed Padlock with Long Shackle and 36 Keys Total (12-Pack, Keyed Alike) GAP02X-KA-12 - The Home Depot