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The magnet set is for measuring the cadence using the Shimano Dura Ace FC-R9100-P Powermeter crank. The magnet can be attached to the chain stay, seat tube or down tube.
The kit includes 1 magnet, 2 covers and 2 tape pads.
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.
