CURT 45912 Replacement Dual Ball for Adjustable Trailer Hitch Ball Mount, 2 Inch, 2 5 16 Inch Step including common pivoting pin boxes power distributionwfco including common pivoting pin boxes Mounts to all industry standard base rails Offers four height adjustment positions to adapt to each unique truck bed Tested for safety in accordance with SAE J2638 Protected by a highly durable carbide powder coat finish Limited lifetime warranty (one year finish 500 Pounds Each or 3 There is nothing more inconvenient than switching back and forth between a few different ball mounts and trying to remember which mount fits with which trailer This replacement dual ball for the CURT adjustable channel mount offers a gross trailer weight capacity of 10