Adequate Quantity:15 PSI pressure regulators, which are nice for drip irrigation system; The quantity is sufficient to meet your and provide you with enough supply Universal Size: 15 PSI water pressure regulator has an inlet size of 3/4inch (female hose threads); An outlet size of 3/4inch (male hose threads); Its 3/4inch hose threads are designed for connection to standard hose faucets and garden hoses, and it can be connected to an automatic timer, backflow preventer, or filter Nice Workmanship: made of highly reliable UV and chemical materials, this garden hose pressure reducer's reliable, rugged design provides you with nice operation, no external metal parts, and excellent resistance for long lasting use Conspicuous Design: this water pressure reducer maintains sprinkler or drip flow, distributes water evenly and provides overall efficiency in the irrigation system; It also helps conserve water and energy and extends the life of sprinkler and drip systems in the garden or nursery Where to Apply: this drip irrigation hose connector adjusts dynamic water pressure for most standard 3/4-inch outdoor faucet, hose bib, garden hose, water hose, sprinkler manifold, or home irrigation system; And is ideal for installations requiring lower flow rates, such as cementing, drip hose, and other low pressure agricultural, residential, and commercial irrigation Color: Black Material: Plastic Package Contents: 3 x Drip Irrigation Pressure Regulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.