Features: Keep your breast pump working at its best with this convenient spare part, easily replace worn out membrane for optimal suction and leak prevention. Made of durable plastic, the membrane provide reliable performances and prevent leaks during pumping,say goodbye to interruptions and enjoy a seamless pumping experience. Designed for breastfeeding moms, this replacement part is a must have for those using breast pumps, ensuring a smooth and efficient pumping process, giving you peace of mind. Whether at home or work, the membrane is essential accessories for hassle free pumping, enjoy uninterrupted milk expression and make the most out of your pumping session. Suitable for Swing, Mini Electric etc four kinds breast pumps, experience enhanced comfort, efficiency, and convenience while expressing milk. Specifications: Material: Plastic Color: White Diameter: Approx. 2cm/0.78inch Applicable Models: for Swing, Mini Electric etc Four Kinds Breast Pumps Package Includes: 1 Piece Breast Pump Replacement Membrane note: Only the white membrane, no anti overflow valves. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.