QUICK COUPLING VALVE WRENCH Mark Flo Symbol 88927 Series GRD Material POM Quick coupler Yes Connection thread size G3/4 (M) Wrench (connection) for FLO 88926 quick connect valve. Allows you to connect a sprinkler or hose to the water intake and watering without having to turn on the main valve each time. wrench with external thread 3/4" material: POM