Fits both 1/2-inch and 5/8-inch receivers;Usable length of receiver pin is 2-3/4-inch;Push to lock locking mechanism, push lock body onto pin firmly and remove key;1/2-inch pin is rated for Class I/II 3,500 pound load rating and 5/8-inch pin is rated for Class III/IV 10,000 pound load rating;Weather resistant seal and cap protects lock from moisture and dirt, not recommended to be left on vehicle for extended time

• Master Lock 2866DATSC Swivel Head Receiver Lock, Chrome
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Master Lock 2866DATSC Swivel Head Receiver Lock, ChromeMaster Lock