rand Rain Bird Style drip Material Plastic, Rubber Item dimensions L x W x H 16.3 x 7.9 x 9.7 inches Product description: 1800 Series pop-up to 6 drip emitters with 1/4-inch tubing. Kit converts underground sprinklers in landscaped areas to water-saving drip irrigation emitters. Easily installed in minutes, this kit waters flower beds, shrubs, and more with pinpoint efficiency. All-in-one unit provides 30 psi (pounds per square inch) pressure regulation, and 200-mesh filter screen for optimal drip system performance. Saving up to 40% over sprinkler watering, drip systems apply water directly to the root zone for healthier, faster-growing plants, longer lasting blooms, and greener leaves. Since you won't be watering the surrounding soil, you'll also have fewer weeds to pull. Each retro-fit conversion head will replace pop-up sprinklers with a 1/2-inch threaded bottom inlet. Dig out old sprinkler and thread on retro-fit assembly; flush system to remove any debris before adding tubing or emitters. Each kit contains (1) pressure-compensating 6-outlet manifold, (1) 1800 retro-fit spray head with filter and pressure regulator, (1) 50-foot roll of 1/4-inch drip distribution tubing; (6) stakes to hold tubing and direct the flow at each plant (3) 1.0 gallon per hour black emitters, (3) 2.0 gallon per hour red emitters. You can cap off any additional unused spray heads using Rain Birds model 1800CAPS (sold separately).