Resuable: Easy to install and clean,Nipples screw easily onto any standard soda bottle,such as bottle, coke bottle, etcGood Design: Tip of nipple can be cut off to increase milk flow before feeding,special flutter valve prevents air intakeWide Application: Designed nipple for feeding orphaned small animal, for cows, sheep and other mammalsSpecially designed nipple popular for feeding orphaned lambs and samll petThe flutter valve allows air flow, eliminating lambs filling up with air and bottle collapsingEasily screws on most bottles including 2-liter bottlesSpecification:Colour: Red, YellowMaterial: Silicone, PlasticSize: Height 6.2cm, diameter 3cmPackage Contents:40 x lamb pacifierNote: Cut a small hole on the top of nipple before usingOnly the above package content, other products are not included.Note:Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.