Wahoo Fitness Power Zero Single-Sided Power Pedals - Dual Sided Clipless Composite 9/16" BLK Pair Single-Sensing SpeedplayA powerful combination The combined forces of Wahoos proven power algorithms, and the dual sided efficiencies of the SPEEDPLAY Pedal System, set POWER Pedals a cut above the rest. The ultimate power pedal system that combines Wahoos proven performance metrics with SPEEDPLAYs race winning, dual side platform. Combines proven sports science and industry leading research with the well loved SPEEDPLAY platform Accurate to + 1%, the internal gyroscope