Shimano Spares HB-M8010 external lock ring and washer, black
SHIMANO Unisex Y0nr98010 CS-R8100 Lock Ring And Washer, Silver
Shimano HB-M618 lock ring & washer
SHIMANO Unisex Y0lf98010 CS-M4100 Lock Ring For 11T, Silver
SHIMANO Spares CS-R7000 lock ring and spacer, One Size, Y1WW98010
Shimano CS-HG800-11 lock ring and spacer - MRRP £7.99