Weight Distribution Hitches at CARiD:
http://www.carid.com/weight-distribut...

If the back of your tow rig sags and your headlights illuminate the sky when you tow a heavy trailer, and the whole outfit handles strangely and takes a while to bring to a stop, you need a Weight Distribution (WD) hitch.
Watch this video to learn how to set up a weight distribution hitch!

All Towing Products:
http://www.carid.com/trailer-hitches....