Feature:1. ACCESSORIES QUANTITY: These parts, including 4pcs diaphragms and 6pcs duckbill valves, perfectly meet all your accessory needs when using the wearable or electric bust pumps.2. WIDE COMPATIBILITY: These parts include replaceable duckbill valves that are suitable for most wearable bust pumps such as for S9, S12, S9Pro, S12Pro.3. LEAKAGE PROOF: The diaphragms accessories are designed to assist in creating a seal to prevent any leakage of bust milk. Additionally, the silicone duckbill valve is designed to prevent milk backflow, ensuring a worry free pumping session.4. SAFE SILICONE MATERIAL: Made from silicone material, these pump parts are safe, soft, and odorless. This assures a well replacement of the pump parts, giving you peace of mind and comfort while pumping.5. EASY TO CLEAN: These accessories are easy to clean. Just wash the duckbill valve and silicone diaphragms with warm soapy water after each use, rise with clean water, and let it dry. They can also be cleaned using steam, boiling water, or a microwave steam bag.Specification:Item Type: Wearable Bust Pump AccessoriesMaterial: Silicone.Package List:4 x Diaphragm 6 x Duckbill Valves