CURT Receiver Tube Extenders are made to extend your vehicles receiver tube, which provides additional clearance. Extend your receiver tube from 1 ¼” to 7”, 2” to 8”, 2” to 14” or 2” to 18”. Receiver tube extenders work great when towing a cargo carrier or bike rack. Gross tow weights (GTW) for 2” extenders is 3,500 lbs and 1 ¼” extender is not intended for towing use. This high-quality CURT product is finished with a durable powder coat for added rust resistance.