Check the listing for details. 10Pcs Shower Flow Reducer Limiter Set Water Flow Saver Adapter Set. Color: Black, Condition: New, Made in China. Listed at 19.84 USD. Specification:Material: POMWorking Temperature: 0~90℃ Water flow reducer is approx. 0.56 x 0.54 x 0.09inch / 14.2mm x 13.8mm x 2.4mm, Description:Features: It is designed to help save water and reduce water usage during showers.Function: The flow reducer limiter set effectively reduces the water flow from your shower head, allowing you to conserve water and save on your water bills. It helps to regulate the water pressure and maintains a consistent flow rate for a better experience.How to Use: Simply install the restrictor valve and washers in between your shower head and the water pipe. Adjust the flow rate according to your preference by selecting the appropriate gpm level. The set is easy to install and does not require any special tools.