Master Locks - Keyed Alike Stainless Trailer Locks 40KA-3 Pack Keyed Alike 2-3/4 (70mm) wide stainless steel body resists corrosion. 6 keys included. If you ordered two or any multiple of 3-packs we will automatically key them the same. Ideal protection against bolt cutter attacks with a fully shielded design that minimizes shackle exposure. Case-Hardened 3/8 steel shackle for exta cut resistance. Key retaining feature ensures padlock is not left unlocked. This lock is also available in a 2 and 4 pack quantity, search 40KA in our storefront.