Trailer Hitch Lock, Fits 2 Inch Square Receiver, 5/8 Inch Pin Diameter, Professional, Stainless Steel. Designed for marine use, Fulton brand receiver locks are time-tested and application-proven. A stainless steel finish protects against corrosion. Lock up it and find it where you left it.

-Patented design eliminates weak points

-Ball bearing lock system prevents theft even if lock is broken

-Square key design virtually eliminates lock picking