Material: Butyl Rubber
Size: 13mm/1/4 inch
Quantity: 100
Weight: 2g each
Application:
1e stoppers can be used to make self-healing injection ports in Mason jar lids or medicine bottles.
2. Mainly used for mushroom growing and liquid culture production.
3 with hypodermic needles to inject cultures, therefore eliminating the need to remove the lids on your culture jars.
4 fit 7 mm diameter opening.