Features: Optional pair of accessory: diaphragm, duckbill valve, 22/ 26mm little breast Cover, 24/ 28mm breast Cover, 8oz cup, connector. Made of food-grade silicone material, safe and odor-free. They can be conveniently cleaned and disinfected in boiled water. Perfect accessories to prolong the service life of your breast pump. Simple to assemble and replace, makes pumping easier than ever. Specifications: Material: Silicone Quantity: 2 Pcs (a Pair) Type: Diaphragm/ Duckbill Valve/ 22mm Little Breast Cover/ 26mm Little Breast Cover/ 24mm Breast Cover/ 28mm Breast Cover 8oz Cup/ Connector (Optional) Package Size: Diaphragm/ Duckbill Valve/ Little Breast Cover 12.2 * 12.0 * 5.0cm / 4.8 * 4.7 * 2.0in Breast Cover/ Cup: 22.0 * 22.0 * 7.0cm / 8.7 * 8.7 * 2.8in Connector: 16.5 * 16.0 * 5.0cm / 6.5 * 6.3 * 2.0in Package Weight: Diaphragm: 22g / 0.8oz Duckbill Valve: 12g / 0.4oz 22mm/ 26mm Little Breast Cover: 12g / 0.4oz, 10g / 0.4oz 24mm/ 28mm Breast Cover: 110g / 3.9oz, 115g / 4.1oz Cup: 95g / 3.4oz Connector: 70g / 2.5oz Package List: 1 * Pair of Accessory (2 Pcs)