Boot Doc Gel Pads Red Mens These cassettes are optimized for

These cassettes are optimized for off-road and feature PowerGlide II shift technology for smooth and positive shift performance with minimal additional weight

The sleek and efficient Fazua drive system kicks things up a notch when you need it—like riding into a headwind or beating your buddy up a climb—but doesn't drag or hold you back when it's not in use

Durable glass reinforced nylon body features eleven replaceable steel pins each side for rock solid grip

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Boot Doc Gel Pads Red Mens These cassettes are optimized forUsed to distribute pressure and relieve sensitive areas. For use on shins, ankles, and insteps Can be cut to size and shape Reusable Size: Uni