HEAVY DUTY 2-1/2" CASE HARDENED STEEL SHANK PADLOCK WITH 2 KEYS - Amazon.com
CP60 Combination Open Shackle | Hardened Steel | All Weather Padlock – Squire Locks
Yinpecly Iron Keyed Padlock Hardened Iron Laminated Padlock Resistant Keyed Different for Outdoor Use 30mm Wide Iron Body & Shackle-1 Pack - Amazon.com