The pulley is matched with the European standard 20 series profile. It contains two bearings, the model is 625zz, the inner hole is 5mm, the outer diameter of the pulley is 24mm, and the thickness is 11mm. The shell is made of black POM, which has smooth rolling, good wear resistance and high hardness.
Bearing type: Deep groove ball bearings 625zz；
Dimensions: outer diameter 24mm, inner hole 5mm, thickness 11mm;
Material: Black POM