Replacement Shimano non-turn washer (drive side). This is the right side (chain side) non-turn washer, silver in color. 6R degree.
Non-Turn Washer (Drive Side) Shimano – 11R, 8S, 8C

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$4.49
Replacement Shimano non-turn washer (drive side). This is the right side (chain side) non-turn washer, silver in color. 6R degree.