CONTENTS: 2 base connectors (white membranes and caps included), 2 duckbill valves and 2 size changer cylinders (DOES NOT INCLUDED SEPARABLE SHIELD and TUBE in this kit). Not original Medela pump parts. Not original Medela PersonalFit Flex connector. Made by Maymom. | COMPATIBLE WITH Medela new pump in style with MaxFlow, Medela Freestyle Flex, Medela Swing Maxi, Medela classic Freestyle and Medela Sonata breastpumps. NOT compatible with other models of Medela pump in style advanced and Medela swing pumps. Please refer to the photos of this listing before making purchases to find the right kit for you. | DOES NOT INCLUDE SEPARABLE SHIELD and TUBING. The connector itself does NOT work. You need to purchase a shield to make up a flange. Compatible with Medela PeronalFit breast shields, new Flex shields, Pumpin Pal breast pump flange, Lansinoh ComfortFit breast pump flanges, and Maymom MyFit shields 10, 12, 13, 14, 15, 16, 17, 19, 21, 22, 23, 24, 27, 28, 30, 32, 34, 36 mm. | MAYMOM-MADE PRODUCTS and PERFORM AS WELL AS OEM PARTS. With this kit, you can connect most tubes on the market including Medela Pump In Style MaxFlow tubing, Medela Freestyle Flex tubing, Medela Swing Maxi tubing, Medela classic freestyle tubing and Medela Sonata tubing to use this connector. | MADE FROM BPA FREE and DEHP Free MATERIALS. Can be cleaned with water steam. Comply with FDA regulations for plastic materials that contact food.