Does this work for the Momcozy S12 PRO?

yes, it's OK work for the Momcozy S12 PRO of 24mm flanges.

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Mompmuir18mm Silicone Flange Inserts Compatible with Elvie Stride Lansinoh Medela for Spectra Insert Willow go TSRETE Momcozy S9 S12 Bellababy Maymom Pump Parts Reduce 24-25mm Elastic to 18mm

Mompmuir18mm Silicone Flange Inserts Compatible with Elvie Stride Lansinoh Medela for Spectra Insert Willow go TSRETE Momcozy S9 S12 Bellababy Maymom Pump Parts Reduce 24-25mm Elastic to 18mm

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Product ID: 505683313

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🔥Boiling, steam, dishwasher safe durability

🧪Precision 18mm fit reduces 24-25mm flange size

🛡️BPA & DEHP free, food-safe silicone

Description

🍼 Pump smarter, not harder — perfect fit, flawless flow!

SAFE HYGIENIC - Crafted from BPA and DEHP-free silicone, fully food-safe with a seamless design for easy cleaning and peace of mind.
CUSTOM COMFORT FIT - Transforms standard 24-25mm flanges down to a precise 18mm for optimal pumping efficiency and comfort.
EFFORTLESS MAINTENANCE - Boiling water, steam, and dishwasher top-rack safe for hassle-free sterilization and long-lasting use.
UNIVERSAL COMPATIBILITY - Seamlessly works with top brands like Elvie, Willow, Lansinoh, Medela, Spectra, and more—no pump left behind.
NEXT GEN MILK FLOW DESIGN - Innovative two-level taper ensures smooth milk flow without suction loss or blockages.

MompMuir 18mm Silicone Flange Inserts expertly reduce standard 24-25mm breast shield tunnels to 18mm, enhancing comfort and pumping efficiency. Compatible with a wide range of leading pump brands, these BPA and DEHP-free inserts feature a second-generation two-level taper design that maintains original pump suction while optimizing milk flow. Durable and hygienic, they are safe for boiling, steaming, and dishwasher cleaning, making them an essential upgrade for discerning pumping professionals.