Master Lock Trailer Coupler Locks - Surround Lock - 378DAT Review Video

Review of Master Lock Locks 378DAT

Today we're going to review part number 378DAT. This is the Master Lock 2-5/16 trailer coupler lock. This coupler lock will guard against trailer tow-away theft. It will fit the 2-5/16 size ball diameter couplers and it fits following brands: The Atwood, the Reese, the Fulton, Shelby, Valley, Dutton-Lainson, Putnam, Acme, Ideal. It will not fit any of the flat-nose style couplers. It does… see more >