Features: Ensure optimal performance of your breast pump with our complete set of replacement parts, compatible with S32/S39 models. Includes 24mm and 27mm flanges for efficient milk collection. Made from high-quality silicone, soft, durable, and easy to disassemble and clean, ensuring a safe and hygienic pumping experience. Designed specifically for breastfeeding mothers using wearable electric breast pumps, providing reliable support throughout the nursing journey. Ideal for use at home, in the office, or while traveling, offering convenient and efficient support for breastfeeding mothers. Enhance your breastfeeding routine with these essential pump accessories, ensuring you have all necessary components for seamless and effective milk expression. Specifications: Component: Silicone Type: 24mm, 27mm (optional) Membrane Size: approx. 4.6 x 4 cm (1.81 x 1.57 inches) Duckbill Valves Size: approx. 1.1 x 2.6 cm (0.43 x 1.02 inches) Applicable Model: for S32/S39 wearable electric breast pump Package Includes: 1 Piece Breast Milk Collector 1 Piece Membrane 1 Piece Duckbill Valve 1 Piece Flange (24mm/27mm optional) Note: Please allow 1-2 cm errors due to manual measurement. Slight color variations may occur due to different display resolutions.