Ingenious Metalworker Makes BIDIRECTIONAL Bolt

We are sure you’ve had a bolt in your hands, but have you ever wondered how they are made? Here you have the process in a large format and with a great twist. Watch this review of an impossible thread, and tell us what you think. Enjoy!

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Disclaimer: Quantum Tech HD is not affiliated with the businesses whose products are shown in this review. Any trademarks depicted are the property of their respective owners.

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