CURT 5th wheel adapter plates are a fast, dependable way to convert your gooseneck trailer hitch into a set of 5th wheel rails to accept a 5th wheel hitch. With gooseneck installation brackets and a gooseneck hitch already installed, the adapter plate simply inserts into the gooseneck trailer ball hole using a solid shank and is secured with the locking mechanism provided by the gooseneck hitch. One of the most attractive features about CURT 5th wheel adapter plates is that they are practically instantaneous: insert the shank, apply the locking mechanism and just like that you have a sturdy pair of 5th wheel rails. This CURT 5th wheel adapter plate features a square shank and is compatible with gooseneck hitches with a square shank removable ball. It features a gross trailer weight capacity of 20,000 Pounds, allowing it to accept a number of 5th wheel hitches, including the CURT A16, Q20 and E16, as well as many competitive models. This 5th wheel adapter plate offers a simple pin-and-clip installation for 5th wheel hitches and has multiple mounting points to accept either 5th wheel legs or a 5th wheel roller. To give you and your truck the advantage in heavy-duty towing, trust CURT to provide the answer you need in every towing situation.