Bess Snap-On Nipple with Insert Pink 1 Each by Cotran Corporation

Product Description Embedded silicone membrane will only let milk pass while calf is suckling, functioning naturally like a real cow is teat. Insert features a round opening at the tip of the nipple. 2 mm hole controls milk flow while calf is latched, increases longevity and eliminates tearing. Narrow neck and soft touch synthetic rubber closely mimic a cow is teat, promoting nursing for adequate feeding.