Standard, tapered hose tail with 1/4" left-hand thread. With a hose tail you can connect a gas hose to a gas barbecue. Do not forget to use a hose clamp (not included) to clamp the hose properly around the hose tail. The ridges on the hose tail provide a good seal. The length of this hose tail is 65 mm. Cadac recommends replacing your gas hose and pressure regulator every 5 years.