SHIMANO SM-RT30 External Center Lock Nut
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Description
This SHIMANO Center Lock clamping nut with external cavity allows you to change the original part on Shimano Center Lock discs .
This nut enables discs to be clamped on wheels with a 15 and 20 mm thru axle.
It is installed directly on the hub using a Shimano-style bottom bracket removal tool with external bearings.
Ref: 15028219281788