Wing Nut Tightening Knob
thingiverse
A 2-1/2" diameter knob I designed to help tighten wing nuts I use to secure Kayak to the rack on top of my truck. This is designed for a 3/8" wing nut. I use J bolts and wingnuts accessible through the open sunroof so I can leave the Kayak on he car all the time without fear of theft. This tool makes it easy to tighten beyond the point where a person without leverage could not remove it.
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