Mushroom Growing Supplies - NoName Injection Port 22684
High quality self healing injector ports. Autoclavable. These rubber self-healing ports can be used to make your own spawn jar lids. These blue stoppers can withstand ~30 injections before they will need to be replaced. They fit into a 12 mm diameter hole.
We also sell super heavy duty injection ports that can withstand hundreds of repeated injections before replacement.