Dust cover for Shimano Nexus SG-8R20 internal hub gears.

This dust cap can also be used on the following internal hub gears:
– Shimano Alfine Di2 SG-S7051-8 / SG-S505
– Shimano Alfine SG-S7001-8 / SG-S7000-8 / SG-S501 / SG-S500
– Shimano Nexus SG-C6061-8C / SG-C6061-8CD / SG-C6061-8D / SG-C6061-8R/8V
– Shimano Nexus SG-C6060-8C / SG-C6060-8CD / SG-C6060-8D / SG-C6060-8R/8V
– Shimano Nexus SG-C6011-8R/8V
– Shimano Nexus SG-C6010-8R/8V
– Shimano Nexus SG-C6001-8C / SG-C6001-8D / SG-C6001-8R/8V
– Shimano Nexus SG-C6000-8C / SG-C6000-8CD / SG-C6000-8D / SG-C6000-8R/8V
– Shimano Cyber Nexus SG-8C56 / SG-8C45
– Shimano Nexus SG-8C31
– Shimano Nexus SG-8C20
– Shimano Cyber Nexus SG-8R56 / SG-8R55 / SG-8R45
– Shimano Nexus SG-8R36 / SG-8R35 / SG-8R31 / SG-8R30
– Shimano Nexus SG-8R25