Comparison of 3 different extruder-pulleys

I made some detail-pictures of 3 different extruder-pulleys with my modded makro lense:

 

0,40€ "china"-MK8:

 

12€ Hobb-Goblin (5mm):

 

60€ E3D-Titan Pulley:

 

Comarison:

Tags: extruder