CURT 60602 Double Lock Offset Gooseneck Ball, 4 Inch Offset, 20,000 lbs., 2 5 16 Inch Diameter pintle We produce our class 2 SEALS We produce our class 2 ball mounts using state of the art CNC machinery and robotic welding These replacement 5th wheel legs are designed to accept the CURT Q24 hitch head and install in your truck bed with the utmost security and simplicity but what happens when you need to pull a gooseneck trailer with an especially long front overhang The CURT Double Lock gooseneck offset ball easily slides into any Double Lock gooseneck hitch and sets the coupling point 4" back of the original trailer ball hole