Features 1. High quality compatible replacement parts - directly compatible with Rain Bird 1800 series nozzles, providing perfect sealing and reliable performance, comparable to original parts. Keep your irrigation system running smoothly and continuously! 2. Heavy duty UV resistant structure - made of durable anti glare materials, it is not easy to crack, fade or become brittle after long-term use. Specially designed to withstand harsh outdoor environments throughout the four seasons. 3. Leak proof nitrile rubber O-ring - using high-quality nitrile rubber O-ring to ensure a tight waterproof seal. It can effectively cut off water flow, prevent water leakage, waste, and low pressure problems. 4. Quick and easy installation - no tools or professional skills required! Just remove the old cover and snap the replacement part into place. The ideal choice for DIY maintenance, saving time and money, and eliminating repair services. 5. Great value three piece set combination - get more at a lower price! The convenient three piece design allows for the simultaneous refurbishment of multiple nozzles. Reserve spare parts for future maintenance - providing an economical and practical solution for carefully maintained lawns. Specifications Material: Plastic Package Include 3PC Sprinkler Head Cap