Received this in good time and it’s well made including threads on both sides. I did something you’re “probably not supposed to;” I put some WD40 on it and then wiped ALL traces off; this cleans out any machine dust from threads. You certainly don’t want WD40 in your filter/lens threads obviously .. but I made sure it was double-wiped clean.Threading is great and just remember (as others have said) not to tighten a polarizer too much if that’s your filter of choice; depending on your polarizer there may be “little room” to loosen it. I’ve mounted mine to the ring and found a case deep enough to carry both in my bag (saves room and time) .. but this is a quality product and saved me roughly $95 in not buying a 67mm polarizer. I’d recommend it to anyone.







