material of rings and retainer:PEEK,POM,PI,HDPE.PVDF.ABS.PP material of balls:ZrO2,Si3N4, stainless and glass long life

Feature:

1.material of rings and retainer:PEEK,POM,PI,HDPE.PVDF.ABS.PP2.material of balls:ZrO2,Si3N4, stainless and glass

3. long life and easy using

Additional serves:

1. prompt delivery

2. excellent quality and reasonable price

Plastic bearing