Feature: 1. PREMIUM MATERIALS FOR SAFETY: Made from quality materials, this duckbill valve and silicone diaphragm ensures safe feeding for your baby, prioritizing health and safety in every use 2. UNIVERSAL COMPATIBILITY: Designed to be compatible with multiple breastpump models, these replacement parts eliminate compatibility concerns, providing an easy and convenient solution for parents 3. UNIQUE DIAPHRAGM DESIGN: The innovative diaphragm design effectively prevents milk overflow, boosting the efficiency of your breastpump and making the feeding process smoother and more efficient 4. LONG LASTING DURABILITY: Engineered for extended use, these parts are sturdy and robust, ensuring they stand the test of time and provide lasting performance for busy parents 5. EASY TO INSTALL AND CLEAN: Featuring a simple installation process and easy cleaning, these duckbill valves save time for busy parents, allowing more pay more attention to what truly matters Specification: Item Type: Duckbill Valve Silicone Diaphragm Material: Silicone for M5 Duckbill Valve Size: Approx. 2 x 2.8cm / 0.8 x 1.1in for M5 Diaphragm Size: Approx. 4.4 x 2cm / 1.7 x 0.8in. Package List: 6 x Duckbill Valve 4 x Diaphragm