6Pcs Wide 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(Golden)

Good

I left an order a couple weeks ago saying I wasn't sure what people were talking about because these lids fit my ball wide mourh jars perfectly.. I placed another order so I could have a few more and the 12 that I ordered did not fit any of my jars.. apparently these people are floating around two different sizes some that seem to fit and some that don't.. absolute waste of time I will not be using these again and I will be going back to making my own with RTV silicone, a drill, and polyfill. I do not recommend these because you could be in for a very nasty surprise depending on what they send you.

They fit well for wide mouth jars, easy to sterilize and seal well. Construction seems sturdy and no issues so far.

Works well no problems so for

Will not screw onto BALL brand wide mouth jars, at all. the jar threading is too wide for the lids, will not fit on any of my ball brand jars from many varied years of manufacture.Thankfully, they will fit onto the oddly threaded GLING brand jars which I had on hand, otherwise I'd be demanding a refund and suggesting you fire all your quality control people who clearly didn't test any of these lids on standard mason jars.Other than that, I have run through 50+ of these lids from this seller and never had problems with fitting on any brand of mason jar, and each lid has survived dozens of use cycles. high quality drilling, rubber injection port, and washer-sealed air filter, no complaints until they don't fit on the quintessential mason jar brand out of nowhere.

Did not fit wide mouth mason jar!!! Waste of time now have to order from different company and wait again!!

Used for oyster mushroom culture, lids themselves did not fit ball wide mouth jars correctly. Components were good though

Didn’t even screw onto quart size wide mouth jars.