Fulton/Wesbar (Cequent) Lock-Chrome Coupler 580403
Bulldog Trailer Coupler Lock 5/8" #220-580403 Guard against trailer theft with this durable steel, butterfly-style coupler lock. Works with most ball couplers that have trigger-style latches. Chrome plating resists corrosion, and the unique ball-bearing locking mechanism provides extra security. Application: trigger-latch-style ball couplers Inside pin length (span): approximately 3/4" Pin diameter: 1/4"