Hi there. I'm Michael with etrailer.com. Today, we're gonna take a quick look at this Shocker Gooseneck Surge Air Hitch Coupler. This is a shock-absorbing gooseneck coupler that will replace the 4" square stem and coupler with the top crank handle for your gooseneck trailer. This is going to help to smooth out the ride for you as you're towing your trailer. A lot of those bumps and jolts that you… see more >