This thread is coarse. I already bought one but the thread was too thin. There appear to be two types, with fine threads being much more common. I'll try to see if I can calculate the number of threads, or in some other way than coarse and fine, describe them and add to this review. Once you have it, it's impossible to tell if it's gross or subtle without comparing something. I didn't know until I ordered and got the wrong one.
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