Hobson-Zingo Chain Whip

This prevents the cassette from moving backwards while you use a wrench to remove the cassette lockring…so the cassette can slide off the hub. You need to do this when you wear out a cassette or want to change ratios.
– 1/2 x 3/32"

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Intentionally made without plastic or vinyl handles for the environment's sake. We recommend you wrap them with Newbaum's Cotton Tape and finish the ends off with twine. The tool factory Rivendell contracted with took about a month to wrap their head around the idea.