in case you need two-sided eyelets, i add a extra eyelet (pulley_eyelet) which is easily mounted to pin.

you also need print the modified pin (pulley-pin-mod) with 1.65mm longer. 

if this eyelet is too loose, you can increase the height of pulley_eyelet stl  a little (e.g 0.2mm) in your slicer. 

get other files from the original, also follow the print tips there.

原设计中只有单边挂孔，可是我们在某些应用场合可能需要用到第二个挂孔。

此设计的可以适配原设计，只要再打印两个零件（pulley_eyelet和pulley-pin-mod）即可。

如果你觉得挂孔固定太松动，可以适当增加pulley_eyelet打印件的厚度即可。