Master Lock 1471DAT Trailer Coupler Latch Lock, 3-4/10" Long Shackle x 9/32" Diameter Pin & Master Lock 2866DAT 1/2 in. and 5/8 in. Swivel Head Receiver Lock for Class I-IV, 1 Pack, Black

• This Master Lock protects and guards against tow-away theft. The lock works when the trailer is either connected to the tow vehicle or when the trailer is unattached. The lock prevents the coupler latch from moving, therefore preventing either the coupler to be removed from the ball, or not allowing a ball to be placed into the coupler. Fits UFP and surge brake couplers. K1 key blank Pin length or dimensional fit is 3-1/2" wide with a 9/32" diameter pin which is a standard size on virtually all couplers. Chrome plated for improved wear and corrosion resistance. It has a precision 4 pin tumbler mechanism that resists picking Receiver lock provides added security and theft deterrence while towing 1/2 in. trailer hitch locking pin is rated up to 3,500 lbs (Class I and II), 5/8 in. trailer hitch locking pin is rated up to 10,000 lbs (Class III and IV) Locking head rotates 360 degrees allowing keyway to conveniently face forward. receiver lock features push-to-lock locking mechanism to ensure a secure lock every time. Push head firmly onto the pin and remove key Snap-on cover provides weather resistance and prevents dirt and moisture from entering keyway, four-pin cylinder for added security to prevent lock picking