Best Helmet Chin mount for GoPro | DJI Osmo | Action Camera

Описание: I have been searching for chin mounts for very long but couldn't find any which can fit my all helmets.. those traditional chin mounts with strap or long tapes doesn't make sense to me because by time it gets loose. and I can compromise with my helmet for 2 negligible holes. further videos will be shot with those diy chin mounts.
thanks.