Customer Service: If you have any questions or problems about our products, please do not hesitate to send us a message through Amazon. We will reply you within 24 hours.
- Suitable for 6mm belt ;-For use with 3D printer accessories. ;-Bore is 5mm. ;Your satisfaction is our only purpose. ;PROFESSIONAL CUSTOMER SUPPORT - We are professional manufacturer of printer accessories. If you have any questions about our products, please feel free to contact us. We will respond within 24 hours.