Specifications:
Materials: Made of brass, 1/2 NPT restrictor valve. Made of POM material, used to control water flow rate.
Rubber gasket for a tight seal.
Product gross weight: 9g
Different colors tell different water flow specifications:
blue: 1.5 GPM
yellow: 1.8 GPM
green: 2.0 GPM
White: 2.5 GPM
Black: 3.0 GPM.