"The Curt RockerBall Multi-Fit OEM Puck System Gooseneck Ball is designed to work with select Chevy, Ford, GMC, & Nissan pickups that have 5th wheel prep packages. A 2-5/16"" diameter ball is included that fits 2-5/16"" gooseneck couplers. You’ll get 4"" rearward offset which provides your greater turning capabilities and clearance. Patended ShockDrop technology will provide you with a smooth towing experience – something you and your passengers will appreciate and enjoy. You’ll notice the anti-rotation arm & adjustable anchors which provide increased stability & eliminates chucking between the frame & pucks. The frame and gooseneck ball are constructed from forged steel alloy. The gooseneck ball features a chrome-plated finish with the frame being topped off with a durable carbide black powder coating for superior protection. The Curt RockerBall Multi-Fit OEM Puck System is rated for towing up to 30,000 lbs. | Curt Multi-Fit OEM Puck System Gooseneck Ball 60663"