Features: Optional pair of accessory: diaphragm, duckbill valve, 22/ 26mm little breast shield, 24/ 28mm breast shield, 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 Shield/ 26mm Little Breast Shield/ 24mm Breast Shield/ 28mm Breast Shield/ 8oz Cup/ Connector (Optional) Package Size: Diaphragm/ Duckbill Valve/ Little Breast Shield: 12.2 * 12.0 * 5.0cm / 4.8 * 4.7 * 2.0in Breast Shield/ 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 Shield: 12g / 0.4oz, 10g / 0.4oz 24mm/ 28mm Breast Shield: 110g / 3.9oz, 115g / 4.1oz Cup: 95g / 3.4oz Connector: 70g / 2.5oz Package List: 1 * Pair of Accessory (2 Pcs)