A Woodruff key is a semicircular shaped, removable key that fits into a matching keyway cut into a shaft, leaving a protruding tab. The tab mates with a matching slot on a device mounted flush upon the shaft e.g. a pulley, thus preventing the device from freely rotating about the shaft.
Fits clutch on smallframe scooters V5A,V9A,VMA
Fits flywheel on GS 150's VS1-VS5
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