I almost laughed at how much I paid for such a small product. Yes everything fits well and seems to be a very solid and reliable product but let's face it it's just two vacuum tubes and a mass produced pair made from pieces of plastic nozzles. We are not talking about medical devices here. Not sure if there is an alternative or if these are proprietary parts. If yes, then this is a good scam. I would suggest looking for another product. It's just ONLY CERTIFIED for what we're talking about here. Much luck.
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