If youre replacing the filter in a gravity water filter system, youll need one of these universal wingnuts to keep the filter candle in place – along with a rubber sealing filter washer (sold separately.) One wingnut is included per pack, and as with all Doulton® parts, theyre fully tested to guarantee the best results. Black plastic wing nut for replacing filters in a gravity-fed water filter system Fixes the filter candle in place One wingnut per pack Must be paired with rubber sealing filter washer
