For use with Shimano Alivio BR-M4050 disc brake calipers.
This Connecting Bolt Unit can also be used on the following brakes:
Shimano Acera BR-M3050
Shimano BR-M365
Shimano BR-M355
Shimano BR-M315
Shimano BR-MT500
Shimano BR-MT200
Shimano BR-RS805
Shimano BR-RS785
Shimano BR-RS505
Shimano BR-RS405
Shimano BR-UR300
Shimano Metrea BR-U5000
These are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.
Genuine Shimano replacement part.