This is an adapter designed for the JBL tune 110 series of headsets. It has not been tested with other types of headphones, but it may still work with some. You can insert your headphones into the adapter after removing the ear tips, then put the whole thing into your helmet's earpiece holder. For best results, print this out of TPU, or some other flexible filament.
I would recommend printing this with a solid infill 'block' in the middle, and a 5% infill everywhere else. I printed it with a 0.4mm nozzle and a 0.2mm layer height, but this should not really matter. I would recommend printing this out of some kind of flexible filament.
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