Maymom Pump Parts Compatible with Lansinoh SmartPump, Signature Pro Breastpump, 24mm Flanges (Classic), wide-mouth connector, Valve, Tubing and Backflow Protector, Not Original Lansinoh Accessories. Individual part is not interchangeable with the OEM part. You must use the whole kit with the Lasinoh pump. Made by Maymom, not the OEM company. Personalized flange size ranged from 10mm to 36mm in small increments available for pumping comforts and performance. Bottles are not included. You can use your own Lasinoh bottles or Maymom bottles with this Maymom kit. Made from BPA-free material. Can be cleaned with water steam, boiling water or microwave-steam bags. Comply with FDA regulations for plastic materials that contact food. Test reports are conducted by independent lab and available online for reference. Maymom Pump Parts Compatible with Lansinoh Breastpump,Flange, wide-mouth connector, Valve, Tubing and Backflow Protector, Not Original Lansinoh Accessories.