Reese Towpower Class III Interlock Ball Mount is rated for 600 pounds tongue weight and 6,000 pound gross trailer weight.  The 2 inch square hitch bar has a 3-1/4 inch drop to level your trailer and add to the safety and ease of towing.  This ball mount features a built-in interlock system that only one wrench is needed to tightened the hitch ball to the mount.