This is a thumb screw design which is compatible with my Bike A Utility design.
Nut, bolt and thumb screw base are included.
Update 31.8.2016 (u30816)
-redesigned geometry of nut and bolt
-addition of the Monolith model, which is a single piece 3d model, combining the thumb screw base and the bolt.
Please post your opinion about this design below.