Globe Scientific Tube Closure Thermoplastic Elastomer Pierceable Plug Cap Blue 13 mm For 13 mm Vacuum and Test Tubes NonSterile
These pierceable caps are great for recapping vacuum blood tubes and test tubes.
They are produced from thermoplastic elastomer (TPE) and can easily be pierced with a syringe.
1,000 blue pierceable test tube caps per bag.

 Brand: Globe Scientific