M4 Bolt Knob
thingiverse
Here is the rewritten text. Designed to firmly bond over the end of an M4 socket head bolt (8.35mm diameter x 5mm deep), a custom solution was required for a specific GoPro accessory. A bike mount design, available on Thingiverse, necessitated this unique component: https://www.thingiverse.com/thing:2035171
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