I received a non-working product. The blade has trouble opening and closing. When you open it, it does NOT lock in that position. When you close it, it does not "snap" either. The locking mechanism does not work at all. I have provided video evidence of that. The seller is avoiding any contact from me (did not reply to any message), while AliExpress proposed a partial (30%) refund, which is completely stupid, as the only thing I can do with this blade is to throw it away. A COMPLETE JUNK! I HIGHLY ADVISE YOU NOT TO BUY IT. In case anything will progress in my case, I will update this comment, but I highly doubt it, as I was trying to resolve the issue for the last 30 days already.
Absolutely perfect in all direction!