For use with Shimano SLX CS-M7100 12 speed 10-45T & 10-51T cassettes.
This Lock Ring & Spacer can also be used on the following cassettes:

• Shimano Deore XT CS-M8100
• Shimano Deore CS-M6100

These are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.
If the correct Lock Ring & Spacer are unavailable you can also use the lockring & spacer from the following cassettes:

• Shimano XTR CS-M9100

This is a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.
These cassettes require the Shimano TL-LR15 Lock Ring Removal Tool & the Shimano TL-SR24 Sprocket Remover Tool.