Bullet Points : 1 > Lansinoh Parts- These Replacement Valves Are Manufactured By Lansinoh To Fit Our Pumps With Exact Specifications 2 > Extra Replacements- Four Valves Are Included In Case More Valves Are Needed In The Future 3 > Fits Multiple Pumps- These Valves Are Compatible With Lansinoh Signature Pro, Smart Pumps, Manual Pump 4 > Extend Pump Life- Replacing Parts That Have Experienced Natural Wear Can Help Maintain Your Pump'S Suction 5 > Over 35 Years- By Moms, For Moms, Lansinoh Laboratories Has Been Helping Moms Breastfeed For Over 35 Years Description : Lansinoh Breast Pump Valves, 4 White Duckbill Valves