Gray-coated die-cast zinc trailer coupler lock guards against trailer towaway theft. Fits most 1-7/8", 2", and 2-5/16" ball diameters. Comes keyed alike if ordering more than one lock.
Fits: Masterlock Trailer Coupler Locks (377DAT, 3774DAT, 378DAT and 379DAT) Please type in key number above MLK1 MasterLock Replacement Key for Coupler Locks
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