This Tension & Guide Pulley Unit can only be used with Shimano Deore RD-T610 rear derailleurs.
If the correct Tension & Guide Pulley Unit is unavailable you can also use the unit from the following rear derailleur:
- Shimano Deore LX RD-T670-A
This is a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.
Genuine Shimano replacement part.