Heininger Advantage SportsRack Hitch Extensions are designed to extend the receiver hitch up to 11 inches. This allows you to mount bike racks that normally would not fit on your vehicle. These extensions are also perfect for vehicles with rear-mounted spare tires. The integrated anti-wobble device fits 2-inch receiver hitches and keeps both your mount and bicycles stable. Designed to extend the receiver hitch for the bike racks Perfect extensions for vehicles with spare tires on the back Facilitates to attach bike racks Features an anti-wobble device that fits 2 inch receiver hitches