The details description of single & double  polymer sprocket driving roller cover :

1.the disadvantage of the unit is not only for good looking but further more for the roller running more smoothly and quiet.

3.The cover is well dust proof and water splash proof in operation environment.

4.The design of bearing unit make it able to operate in some special environment.

We  mainly manuchure non-standard droducts as per our customers' denands.If you have any question,please feel free to contact me,I will try my best to meet your requirment.

Best regards,