OLYCRAFT 150pcs Vial Rubber Stoppers Mushroom Self Healing Injection Ports Rubber Bottle Stoppers Fit for 13mm Opening for Glass Vial and Liquid Culture Jars

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  • Size & Package --About 19.5mm 0.77 in diameter, 8.5mm 0.33 thick, hole 8.5mm 0.33 ; Fit for 13mm 0.51 in diameter Opening Mason Jar Lids. Package includes 150pcs vial rubber stoppers.
  • Wide Applications --Great for liquid culture, BRF jars, injection, supplemented substrate jars, grain masters. stoppers can be used to make self-healing injection ports in mason jar lids or medicine bottles.
  • Convenient & Practical --Mainly used for mushroom growing and liquid culture production. Injection port use with hypodermic needles to inject cultures, therefore never needing to remove the lids on your culture jars.

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