Towel hook for shower wall/door. Updated; Now 4 versions

A simple design for a towel hook for the shower door/wall. The glass door in the picture is about 6.5mm thick. Scaling to make it fit should be easy. 

I have uploaded two version, one large and sturdy, and one slim. The large one has a looser fit, and the slim one “hugs” the glass. 

Print with many walls to make it strong enough to hold some weight, as a wet towel can be quite heavy. 

Edit: I have added two new versions of the towel hooks. The sturdy now have a smaller version, and the slim now have a sturdier version. :)

Edit2: Made som minor adjustments to the design, so the slim hooks have a better fit. 

Edit3: Earlier there were two versions with large file sizes. These have now been removed completely, as they were pointless.