Tool used to easily remove the Drain Line Flow Control ( DLFC ) Retainer used in 5600 and 9000 Injector Drain Modules.Can used with 1/4" driver or just your fingers.REALLY helps remove the retainer that sits inside the 1/2" drain fitting connection on the Fleck 5600 and 9000 models. Must be unscrewed to gain access to the DLFC Button behind it for cleaning or replacement..