EASY WATER FLOW ADJUSTMENT: our shower flow restrictor allows for regulating water volume or completely shutting off water flow while showering. CONVENIENT WATER SAVER: great addition to a high flow shower, helps reduce water pressure, no more wasting hot water while getting soaped up. SUBSTANCIAL CONSTRUCTION: all brass construction with preimum brushed nickel finish, quality material and craftsmanship for durability, resists corrode and tarnish. SMOOTH OPERATION, NO LEAKING: inner ceramic valve for smoothly sliding the lever from left to right, seals well without leaking, adds this valve to a dripping shower head without replacing all the plumbing. STANDARD FITTING, SIMPLE INSTALLATION: both the male and female threads are 1/2" IPS for standardized handheld shower, wall mount shower head or bidet sprayer, easy to install by hand or wrench.