The only emitters with self-piercing barbs, making them the easiest to install using the Xeriman tool. Widest selection of pressure-compensating emitters, with 6 flow rates and 2 inlet options. Pressure Compensating Bubbler Features Include: Most compact and unobtrusive emitters. Flow rates from 5 to 24 gph (18.93 to 90.84 l/h). Pressure-compensating design delivers uniform flow throughout a wide pressure range (10 to 50 psi; 0.7 to 3.5 bar). Available with 2 different inlets: Self-piercing barbs for quick one-step emitter insertion into 1/2" or 3/4" drip tubing. 10-32 threaded inlet that easily threads into a PolyFlex Riser, 10-32 Thread adapter or 1800 Xeri-Bubbler Adapter. Inlet and outlet barbs securely retain 1/4" Distribution Tubing (XQ). Robust design; durable plastic construction is UV-resistant and color-coded to identify flow rate. Specifications: Flow: 5 to 24 gph (18.93 to 90.84 l/h) Pressure: 10 to 50 psi (0.7 to 3.5 bar) Required filtration: 100-mesh (150-micron) Specifications: Inlet Thread: Barb x Barb Flow Control: 5