Replacement Knob(1Pcs) Compatible With Brondell Bidet Toilet Seat, Black COMPATIBLE WITH:Replacement Knob Compatible with Brondell Bidet Toilet Seat Non-Electric Bidet,For the center plastic section only INSTALL: You need to remove the metal ring and sticker from the Toilet Seat, and then install the replacement knob in the middle of the metal ring and sticker EXACT FIT:Toilet Seat Replacement Knob is designed for the central plastic part, use this replacement knob to upgrade your non electric Bidet PREMIUM QUALITY: This replacement knob is made of Persistent plastic, which has a long service life and is corrosion-resistant, restoring the functions that your Non-Electric Bidet Toilet Seat NOTE:This knob is not fit for electric bidet, please make sure the model you need to buy matches ours before ordering