Shimano 7R black locking ring for right side.

Fit among other:

SG-5R30

SG-5R35

​SG-7R50

SG-C3000-7R

SG-C3000-7C

SG-8C31

​SG-C6000-8R

SG-C6000-8V

SG-C6000-8C

​SG-C6010-8R

SG-C6010-8V

​SG-C6060-8R

SG-C6060-8V

SG-C6060-8D

​SG-C6060-8CD