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Sold in packs of 4. Freemie duckbill valves are replacements for Standard Freemie Collection Cups.
For best Freemie Cup performance plan to replace valves every 2-3 months, sooner if use us heavy. Use only with cup sets that have a barrier inside. Check the cup parts picture below before ordering.
Quantity Per Package - (4)
IMPORTANT: These valves will not work with Original Freemie Cups. SKU: FG073