Can work around the threading problem
I have this lid which I purchased at a local health food store.  I took the first one back because it wouldn't thread and the owner, who sprouts on a regular basis, showed me how difficult is to make a plastic product like this to thread effectively on a wide-mouth jar.  All that needs to happen is to hold the lid on when you drain the water from your sprouts.  Otherwise, it works great and my sprouts have been ready to harvest within 3 or 4 days.  I don't know if it is possible to have a plastic lid like this that will thread tightly on your jar so it may be an expectation that can't be filled.  However, the manufacturer should let their customers know how it works and why.
Rating: 4 stars