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Second generation 6Pcs Regular Mouth (Dia:70mm) Mason Jar Mushroom Cultivation Lids
The caps fit Regular mouth BALL mason quart jars.
The Metal lid features a rubber self healing injection port, a high quality .22 micron filter
Autoclavable & reusable
Used for Mushroom Liquid /Spawn Cultivation
6Pcs Regular Mouth Mushroom Liquid Culture Lid Grain Spawn Cultivation Mason Jar Lid with 0.2 Micron PTFE Syringe Filter & 20mm Self Healing Injection Ports for Mushroom Growing Mycology