5 gallons in under a minute. Spring-loaded. Auto-stop on the cap. Made for top-load tanks 1.5" or larger.

Internal vent runs through the handle. Back-pressure cuts the flow when your tank is full. No floats. No external vents.

A Shocker Air Receiver Hitch absorbs the road shock, bumps, bangs, jerks, tugs & sways by filtering them through a built in air ride system. 

What makes a Shocker air receiver hitch smoother for towing is that  they absorb the bumps, bangs, jerks, and tugs that you normally  experience when towing with a hard connection between the tow vehicle  and trailer. 

The air ride system is softening and dampening the stress and weight  transfer that is created by bumps and uneven roads when a vehicle is  towing a trailer on pavement, gravel or rough roads. It has been tested  & proven to be the highest rated shock absorbing receiver hitch and  gooseneck coupler on the market. The patented air ride system, exclusive  with a Shocker Air Hitch®.