Super heavy-duty self healing injector ports. These heavy-duty red stoppers are the highest quality ports on the market. Autoclavable. These rubber self-healing ports can be used to make your own myco jar lids. These extra heavy duty stoppers can withstand hundreds of injections before they will need to be replaced. They fit into a 1/2" in. diameter hole drilled with a 1/2" forstner drill bit.
Don't be fooled by other vendors selling cheap look-alike orange injection ports. These ports are the highest quality on the market and are NOT the same as the cheap, unbranded orange ports sold by other vendors.