• NO NONSENSE APPROACH TO TRAILER SECURITY!!!
  • This lock fits one of the most common utility/work trailers in use - the Bulldog sliding collar 2" & 2 5/16" coupler and includes a high security Cobra Sidewinder in aluminum body puck lock.
  • Made with 3/16" fully welded steel with welded hinges and hinge pins.  
  • Heavy yellow powdercoat finish which screams "stay away" 
  • Made in America.  
  • Limited Lifetime Warranty against manufacturing defects. 
  • This prevents a thief from easily cutting other types of locks and driving off with your trailer.
  • Unlike almost all other locks for this application, this one is BOLT CUTTER PROOF and can only be defeated with power tools or a cutting torch.  
  •  Don't trust your trailer and equipment to just any lock.  Think Ft Knox Locks.  Watch our lock defeating videos on our website ( ftknoxlocks.com ), it's actually silly how easy most locks are to defeat - not so with Ft. Knox Locks. 
  • Very Important:  If your "Bulldog" coupler has the word "RAM" cast into the top of the ball area you need to buy a different lock. Here is the link to that lock - it is the same price. http://www.ebay.com/itm/Trailer-lock-Ram-Similar-to-Bulldog-Ultra-High-Security-Bolt-Cutter-Proof-/321677920709?ssPageName=STRK:MESE:IT