Rain Bird 1.0 GPH Spot Watering Emitters are ideal for watering the root zones of plants, trees, and container plants. Xeri-Bugs emit water at rates of 0.5, 1.0 and 2.0 gallons-per-hour (GPH) which allows soils to absorb water more completely into the root zones of plants. Xeri-Bugs are an ideal choice for those wishing to to conserve water or eliminate excessive run-off. The only emitters with self-piercing barbs, making them the easiest to install using the Xeriman tool. Pressure-compensating design delivers uniform flow throughout a wide pressure range (15 to 50 psi; 1.0 to 3.5 bar). Self-piercing barb for quick, one-step insertion into 1/2 in. or 3/4 in. drip tubing. Outlet barb securely retains 1/4 in. Distribution Tubing (XQ). Self-flushing action minimizes clogging. Robust design made from highly inert materials that are resistant to chemicals. Durable plastic construction is UV-resistant. Color-coded to identify flow rate.