Best Trailer Coupler Locks

AMPLOCK Standard Series (2'' Trailer Coupler Lock)

Master Lock 379ATPY Universal Trailer Coupler Lock

Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT

Proven Industries Model 2178 Trailer Lock, Fits Specific 2-Inch Trailer Couplers, Secures Safety Chains, Made in The USA, (Black)

Proven Industries Model 2516 Trailer Lock, Fits 2 5/16-Inch Couplers, Secures Safety Chains, Made in The USA, (Blue)

Trimax TCP50 Trailer Lock Combo Pack (Keyed Alike)

RETRUE Universal Coupler Lock Heavy-Duty Trailer Coupler Locks Ball Hitch Tow Hitch Lock for 1-7/8 Inch, 2 Inch, 2-5/16 Inch Couplers, Grey

Trimax UMAX100 Premium Universal 'Solid Hardened Steel' Trailer Lock (fits all couplers)

Master Lock Trailer Lock, Trailer Coupler Lock, Fits 2-5/16 inch Couplers, 378DAT

Trimax TCP100 Keyed Alike Combo Pack