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Re:Self-tightening nut that provides tight fastening with a ... by 8ig8 on Monday November 10, 2014 @10:38AM (#8584084)
The company's website from the YouTube video comments:

http://www.ztec-izushi.co.jp/english/

I think this is the product on Alibaba:

http://jp1009830113.trustpass.alibaba.com/product/128852485-...

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