Features: Efficient Milk Extraction: This breast pump accessory features an horn-shaped shield that ensures most milk flow for quick and easyexpression. Durable Material: Made of quality material, this three-in-one connector is safe and simple to clean, ensuring long-lasting use. Suitable for New Moms: Designed for breastfeeding moms, this breast pump accessory is perfect for those who want to milk without any hassles. Versatile Use: Whether you're at home or outdoor, this breast pump accessory can be used anywhere, providing convenience and comfort during expressing . Hassle-Free Maintenance: Cleaning this breast pump accessory is a breeze, thanks to its simple and practical design that makes it simple to disassemble and reassemble. Specifications: Material: plastic Standard: 18mm/19mm/20mm(optional) Package Includes: 1xBreast Pump Sizing Insert note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.