20mm Vial Rubber Stoppers (100 Count) Mushroom Self Healing Injection Ports Solid Seal, for Glass Vial and Liquid Culture Jars, Can Be Sterilized by Steam and Repeated Used(20mm)

I use them when sterilize my substrate usually popcorn it works better than anything else I have found and easy to clean off the stems just break them off they make it where I can enoculate without contamination it's very important

Handy if you do your own reconstituting

Excellent. Exactly as described. Fits a 15/32 inch hole perfectly. Use a step drill bit for a super easy clean hole in a jar lid. Oreilly sells a kit that includes a step drill bit with the correct size. Best value for money. Excellent durability, I tested one by puncturing it 20 times. As long as you use slightly different spots it lasts easily 10-15 punctures with a 16 gage needle.

Ok stuff. I'm tripping..

Works as it should, after injecting it seals right back up, I have not yet had a problem with contamination. Solid seal!

These are game changers for liquid cultures for mushroom cultivation. Super cheap for how easy they make sterile spore and LC transfers.

100% success with zero contaminates. No problems being pressure cooked at 15psi for 90 minutes. The ports can be used multiple times, but they're so cheap I use new ones each time. 100 for $10 is an excellent buy.

was very happy with the quality of the product

seems fine

they work

Excelente perfectos

The 15 mm SHIPs fit nice and snug in a 1/4in hole, at least for standard metal canning lids. You will have to pinch and pull them through from the other side, but that's a good thing. Going by the dimensions, I first tried a 9/32 hole, but that was a bit too loose. Use a sharp bit with a sacrificial block of wood under your metal lids to prevent a lot of burs, and hand-twist a large bit on the backside to clear those up - not that that side being sharp matters too much, but it could damage your SHIPs over time. I haven't used them fully yet but just going by initial impressions I'd say these are well worth the money and effort.

Arrived on time, lid dinted but produce in good shape