some of the older MTB stems & some road ones too had squeeze bolts like that, the bolt was forever falling out when the stem wasn't on a bike :-( maybe a one could be found and adapted, I'd have to poke about and see if the stem I had with this is still around.
some of the older MTB stems & some road ones too had squeeze bolts like that, the bolt was forever falling out when the stem wasn't on a bike :-( maybe a one could be found and adapted, I'd have to poke about and see if the stem I had with this is still around.