Each 20 pack includes color coded caps for quick identification, combining ergonomic hand tightening design with UV stabilized substance for long term outdoor durability Crafted from outstanding ( polypropyleneplastic random copolymer), these 1 / 2 " pipe caps deliver extraordinary wear resistance and withstand temperatures up to 203°F / 95°C, ensuring leak proof sealing for both hot and cold water pipelines Perfectly adapts to household plumbing systems, garden irrigation setups, and industrial fluid control applications where strong, resistant pipe termination is required Ideal for homeowners, plumbing contractors, and handbuilt enthusiasts seeking unfailing, tool complimentary installation fixes for residential or small scale commercial projects exactness engineered threads consent with national standards for seamless compatibility with 1 / 2 " pipes, featuring reinforced round grooves to loosening under trembling or pressure fluctuations, Manufacturer: Obotsnoi