Woodruff Key (Flywheel Side)

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.

This key fits the flywheel side on the Vespa GS160 and SS180, VSB1T, VSC1T, VNX, VSX, VLX and Genuine Stella