Pump with Confidence! 💪 Top-rack dishwasher safe and steam sterilization friendly. Weighs only 40g, making it easy to handle and store. BPA-free material complies with FDA regulations for safe use. Designed for Spectra S1/S2, ensuring seamless compatibility. Works with various wide mouth bottles, enhancing your pumping experience. 17mm Flange Size Dishwasher Safe BPA Free Material The 17mm Maymom Wide Neck Pump Part is a high-quality replacement flange designed for Spectra S1/S2 pumps. This BPA-free accessory ensures safety and compatibility with various wide mouth bottles, making it an essential addition for efficient and hygienic pumping. Lightweight and easy to clean, it’s perfect for busy professionals who value convenience.