We specialize in surplus lots.   This is a brand new, West Brand 1,000+ piece lot of Magenta 20mm flip top seals for use with 20mm serum vials in combination with 20mm stoppers (sold separately).   They provide airtight seals when used in conjunction with 20mm rubber stoppers (sold separately).   Plastic top flips off to reveal aluminum seal with hole.   These will come in a tied plastic bag as shown.    Manufacturer is West.   Buy with confidence, check our feedback.   We ship Priority US Mail with tracking for small amounts and UPS ground for large amounts.

** NO RUBBER STOPPERS INCLUDED WITH THESE.   WE SELL THOSE IN A SEPARATE LISTING. **