SPD Push On AN fitting ID: ~15,2mm Easy to use system where you just push the hose over the barb on the AN fitting to lock the hose. This is enoug to make a sealed connection for air BUT the hose should always be locked with hose clamps if you run liquids. A flexible system which lets you connect to vehicles original barb in one end of the hose and the Push On hose end in the other.  SPD AN fittings have the absolute highest quality available. All AN fittings are hard anodized, making them highly wear resistant. The AN fittings can be used with all fuels avalible like gasoline, methanol, ethanol and diesel. They are also suitable for use in water, air and oil systems. These AN fittings is compatible with Push On rubber hose. We offer a full 5-year warranty on all SPD AN connections.