The standard fittings with internal threads are designed for seamless integration with pipes. These fittings are for both home and industrial use, ensuring a secure and leak- connection. Ideal for water lines, these pipe fittings are easy to install and provide a reliable solution for plumbing needs. Whether you're working on a new installation or repairing an existing system, these fittings offer durability and efficiency. Features -Color:White -Material:PVC -Size:4.00X2.80X2.10cm/1.57X1.10X0.83in -Diameter:21.3mm - construction: made from pvc, this female threaded adapter is designed to withstand impact without cracking, ensuring durability -Smooth surface: the smooth surface and tapered edges of the pvc threaded coupling provide a secure and leakfree connection, enhancing the overall performance of your plumbing system -Versatile application: suitable for both indoor and outdoor use, this adapter is ideal for irrigation, underground sprinklers, cold water supply lines, fire sprinklers, rainwater collection, and swimming pools -Easy installation: featuring a slip opening on one end and internal threads on the other, this adapter allows for easy and quick connection of different types of pipes -Pressure distribution: for cold water pressure , including irrigation, swimming pools, spas, potable water, underground sprinklers, and chilled water applications Package list: 8 x internal thread pipe joints