Special aeration stone with hose connector in sintered stainless steel for aerating wort. Connect the aeration stone with the hose connector by attaching a PVC hose with a diameter < 7 mm (sold separately).
Perfectly hygienic; to sterilise put the stone in boiling water.
Caution: never touch the aeration stone with bare hands; skin oils can clog the fine pores. Wear gloves or use a clean cloth when handling the stone.