tronxy x5s bearing pulley

pulley to use with 608 bearing for the tronxy x5s. can be use with all type of gantry plate. you can ajust the height of the spacer to fit your setup . it was design to fit m5 screw. with that your 100% sure that the belt are in contact with a perfectly round and smooth surface, instead of printing a platic pulley that would cover the whole bearing. i tested those and they cause imperfection in your print if they are not perfectly round because of your xy calibration or if the printer you use ha