Rigid Risers are used to extend any micro-sprinkler or spray jet above ground. These can also be used in overhead watering of hanging baskets to keep the emitter closer to the basket. Insert barbed end into 1/2" or larger poly tubing. Screw micro-sprinkler or spray jet into the other end. Accepts any fitting with 10-32 threads or micro quick threads. The 1/4" barb also can be inserted into our 1/4" (.170" ID x .250" OD) micro tubing.