Flush union connectors
Fits Hayward Perflex extended-cycle DE, Pro-series top-mount sand and XStream Filtration series above-ground Full-Flo pool and spa filters
Also fits Hayward Power-Flo Matrix above-ground pumps and CL100/CL200 chlorine feeders
Includes 2 pieces per set
It has 1-1/2-inch socket by 2-inch slip end