Rain Bird's innovative self-piercing inlet barb eliminates the necessity of hole punch tools when applying these on-line emitters to any size of polyethylene tubing. Additionally, the barbed outlet connects easily to all 1/4 inch distribution tubing. Rain Bird® on-line emitters are compact, providing a wide range of flow rates, and have a self-flushing design that prevents clogging while ensuring consistent flow between 15-50 psi (1-3.4 bar). These versatile emitters can be used individually or in conjunction with Micro-Quick™ Sprays for optimal application efficiency.