100PCS Self Healing Injection Ports and 120PCS Synthetic Filter Stickers Mushroom Growing Supplies（13.2mm for Ports &20mm for Stickers ）

These self-healing injection ports are well made and work exactly as expected. The rubber material feels durable and reseals properly after multiple punctures, which is important for repeated use. They fit snugly into standard jar lids and are easy to install with a simple drilled hole and seal. The pack of 100 is a great value, especially if you go through these regularly or like to keep extras on hand. They arrived clean and packaged well, and I didn’t notice any defects in the batch I received. So far, they’ve held up without leaking and maintain a good seal. Overall, these do exactly what they’re supposed to do and save time compared to replacing ports more frequently. Solid quality for the price, and I would definitely order these again.

These work great! The ports are good for several uses and easy to replace. The filter patches hold up well in the pressure cooker and water beads off the material. I like the quantities for the price, a few hundred of each will last a very long time 👍

Loved these things. Reusable, long lasting, and get the job done.

Both port and filter are easy to work with. I used RTV with some of the ports and found no difference with not using any! Filter stayed dry with a foil cover on top.

These work well. The only note I would make is that while the seller suggests a 0.2" hole, I've found that a 1/4 drill bit works best for the injection ports. Fits snugly and I've already inoculated several jars without issue. I have a bench drill which made the process a cakewalk, but a hand drill will work fine.

Item fair priced and as described. Another comment says 5/16th bit, but that’s wrong. A 9/32nd bit is perfect to drill both holes and get a snug fit for the injection port.

Great price and a really good product. Priced just right.

So far so good. Used them for the first batch of liquid culture and put the jars through canning sterilization. They did not come detached and appears the adhesion is great.