Check the listing for details. Master Lock 2866DAT Swivel Head Receiver Lock 1/2in (13mm) and 5/8in (16mm). Condition: New. Listed at 28.89 USD. Receiver lock provides added security and theft deterrence while towing.Fit Type: Vehicle Specific. 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. 5/8 in. (16 mm) Diameter pin fits 2 in. (51 mm) Receiver Tubes, Class III/IV; 1/2 in. (13 mm) Diameter pin fits 1-1/4 in.