Up for sale are Avent baby bottle replacement parts. If your constantly losing pieces or the dishwasher claims them, then this is a deal for you. There are 5 parts in each lot. These are all in good used condition but the vents do have DISCOLORATION, just so your aware. The first lot shipped is 4.49 and the second lot shipped is .50 so it’s cheaper to order more than one set. If you don’t see the parts you need please ask and we’ll see if we have anymore. Thanks for looking and we do combine shipping costs.