FlexibleBone(wm).stl - original version, 5 phalanges
FlexibleBone(wm_more flexi).stl - more flexible version, 6 phalanges
FlexibleBone(wm_more flexi_long).stl - more flexible version, 7 phalanges

6mm hole for keychain 

Easy to print, no supports. Printing for about 40 minutes on standard settings.

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