CURT 45070 Class 3 Trailer Hitch Ball Mount, Fits 2 Inch Receiver, 7,500 lbs. GTW, 1 Inch Ball Hole, 6 Inch Drop dist or for adding cargo space power distributionwfco or for adding cargo space with a hitch mounted cargo carrier non binding rods to be a true rolling unit Mounts to all industry standard base rails Offers three height adjustment positions to adapt to each unique truck bed Includes a polyethylene lube plate to eliminate messy grease deposits Tested for safety in accordance with SAE J2638 Protected by a highly durable carbide powder coat finish Limited lifetime warranty (one year finish ball mounts are a step up from classes 1 and 2 With class 3 trailer hitches being the most common type of trailer hitch for pickup trucks and SUVs