Curtain glider for loop curtain

For the standard curtain rails, these gliders work very well. They slide back and forth very easily. They have never jammed in the curtain rail for me.

Print on printing surface laid sideways(As shown in the photo). So the only overhanging is a 3mm long bridge. This makes the printout work very well. 

I printed these sliders with PLA and a 0.4mm nozzle. I set the layer height to 0.2mm. With these settings I am satisfied with the result.