XT2LD Adapter reducer  For 2" square trailer hitch receivers (light duty Class I and II)  XCHAIR HAMX2GO System Upgrade Highest Quality steel tubing construction No Tool assembly - parts slip on and off in seconds. Use existing XCHAIR parts Add item XABK2 (and XT2 for class I and II receivers) Hang your favorite hammock chairs on the back of your vehicle wherever you go!