This ceramic shaft is compatible with fluval 304/305 404/405 replacement parts.(Please note this does not include the impeller a20152 and a20172 )
This filter ceramic leaf shaft Can be used as an alternative stabilizer for our fish tank aquarium system.When the aquarium filter becomes noisy,just replace the Ceramic Shaft, this part can help keep it running properly to keep your aquarium system running.(This will only fit the flat blade impeller)