Replacement Barrel Lock Set & Security Ball  for Knott Avonride Coupling Trailer security Easy installed 

 Replacement Barrel Lock Set & Plastic Security Ball For ALKO Ak301/351 Couplings

• Replacement barrel lock for ALKO AK301 & AK351 couplings
• Easily installed with allen key provided
• Lockable hitched or unhitched
• Includes dummy ball to block the coupling and prevent tow-away theft when trailer is unhitched
• Supplied with 2 keys