SHIMANO SM-SH20 Cleat Spacer Bike Accessories_Multi Tools the Hydroblade optimizes aerodynamics to

the Hydroblade optimizes aerodynamics to minimize drag

Perfect for casual mountain bikers

while a rigid fiberglass nylon outsole ensures all your legs' power goes into those pedals

to ensure appropriate foot support in every pedal stroke

Shimano Tiagra

SHIMANO SM-SH20 Cleat Spacer Bike Accessories_Multi Tools the Hydroblade optimizes aerodynamics toPerfect symmetry is rare in nature, and cyclists are no exception. In fact, it's not uncommon for one leg to be longer than the other. To compensate for such discrepancies, Shimano has developed stackable cleat spacers that provide between 1 mm and 5 mm of height adjustment range