About This 6 PIECE SET: 2PCS 17 mm flanges and 4PCS duckbill valves compatible with spectra s1 s2 9 plus synergy gold pump; Compatible with Ameda MYA Motif Luna Cimilre breastpump. Made By TOVVILD. Not Original Spectra Accessories. Replace Spectra flange and Spectra Duckbill Valve TOVVILD FLANGE can work with wide-mouth bottle, compatible with spectra bottle, maymom / NENESUPPLYAVENT and TOVVILD wide-mouth bottle PUMP EFFECTIVELY. With the correct flange fit, you can be more comfortable, express breast milk more effectively, prevent nipple damage and help you increase your milk supply and have a comfortable experience BPA FREE. Can be cleaned with water steam, boiling water or microwave-steam bags MEET YOUR SIZES NEED: 15mm flange; 16mm flange; 17mm flange; 18mm flange; 19mm flange; 20mm flange; 21mm flange; 24mm flange Overview Brand : TOVVILD Special Feature : Dishwasher Safe Material : Plastic, Silicone Number of Items : 6 Item Weight : 0.15 Pounds