22mm bearing: http://amzn.to/2hHus1j
Hex Nut (1/2"): 0.75" across flats, 0.866" across corners, 0.438" thick (x6): https://www.mcmaster.com/#hex-nuts/=17o4wup
Video: https://youtu.be/HhFIUUV6Yuk
More Info: https://www.instructables.com/id/Hex-Nut-Spinner/
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