What You GotReplacement pump parts kit for Spectra including 4pcsduckbill valves2pcs backflow protectors2pcssilicone tubing each tubing length is 315they are need to be replaced regularly to keep your breast pump at the best performance and make the pumping to be more efficientNot Original Spectra S2 PLUS or Spectra S1 PLUS Spectra S3 Parts Wide Application Compatible with Spectra S1 Spectra S2 Spectra 9 Plus breast pumps Replacement tubing compatible with SpectraMedela breast pump same as original Meet your breast pump accessories replacement needs Same Suction Power as Original parts Backflow protector with silicone diaphragm with strong suction power let you get more breast milk when pumping Duckbill valve designed to prevent backflow of breast milk 315 inch length tubing long enough and easy to plug onto the breast pump Quality pump parts to optimize your pumping experience FoodGrade siliconeComfortableSafeOur Replacement pump parts are made of foodgrade silicone BPAfree safe soft and odorless skinfriendly for mommy and baby soft comfortable material Snug fit can comfort and efficient pumping helping to avoid nipple damage or irritation Easy to installCleaning Easy to plug onto the pump and no more falling tubes and tearing endsthe operation is simple and the use feels comfortableClean with soapy water and rinse with clean water Do not use hard brushes Clean the thin tips with fingers Do not use dishwasher