Size Measurement (appro): the whole set measures 155 x 140mm / 6.1 x 5.5inch (W x H), the lock height can be adjusted from 60mm/2.36inch to 90mm/3.54inch. The diameter of the ball measures 47mm/1.85inch.
The body of the lock is made of aluminum, along with heavy duty steel lock bar, which can well resist theft, prying and drill.
The hitch lock can fit 1-7/8 inch, 2 inch and 2-5/16 inch couplers, nearly meeting all you needs.
All types of weather / Rust / Corrosion resistant.