Hydro-Rain Spiral Barb Fittings are exceptionally distinctive thanks to the aggressive spiral path that aids in installation and provides better strength. The HR-SB fittings also feature a extra tall design between the barbs and threads. This allows the sprinkler to be fully seated and still provide ample clearance for the tubing. Hydro-Rain Spiral Barb fittings are easy to install, provide an extremely durable connection, and are designed for use with all brands of 1/2” tubing.