Bulldog (580410) Easy Access Adjustable Trailer Coupler Lock,Black

Blaylock American Metal TL-20 Coupler Lock

Trimax SXTC3 Premium Stainless Steel Coupler Lock (3.5" Span)

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

Master Lock Trailer Lock, Stainless Steel Adjustable Coupler Latch Lock, 2847DAT

Master Lock - 3-1/2" Long Shackle x 9/32" Diameter Pin, Coupler Latch Lock - Trailer Locks 1471DAT

Trimax ST30 Trimaflex Spare Tire Cable Lock (Round Key) 36" x 12mm

Fastway 82-00-3315 7 Way Plug Cover

Reese Towpower 7042100 Adjustable Coupler Latch Lock

AMPLOCK U-BRP2516 RV/trailer coupler lock (fits 2 5/16 inches coupler)

CURT 23523 Chrome Trailer Tongue Coupler Lock 1/4-Inch Pin Diameter, Up to 3-3/8-Inch Coupler Span