5mm to 12mm coupler
thingiverse
Customized version of Thingiverse's design #299663 Created with Customizer, found at http://www.thingiverse.com/apps/customizer/run?thing_id=299663 Instructions Using the following settings: Bolt diameter is 3 Diameter bottom is 5 Diameter top is 12 Height is 30 Nut diameter equals washer diameter at 5.75 Opening width is 2 Outer diameter is set to 30 Pressure point thickness is at 4.5
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