So I figured that most Allen Key holders that normally come with most sets are unnecessarily large when you go Mountain Biking. So I wanted to design most compact, noise free, wobble and slipping-out free case, that would fit only those keys what you really need on the bike.
It fits keys 8 through 3.
I fount it's best, when it is printed from TPU, as flexibility of the material makes it less likely to snap. Although, I also made it out of conventional PLA and PETG