Rebuild kits for Rally 110 and 210 power meter pedals, sold per side and per cleat system. They restore a worn pedal rather than replacing the whole power meter, which on a component of this cost is the difference worth knowing about.
Choose the cleat system that matches your pedals — Look KeO for RK, SHIMANO SPD-SL for RS, SHIMANO SPD for XC — and the side you are rebuilding. Kits for both sides are available, so a full rebuild is two kits.
These fit the Rally 110/210 generation, which uses the four wrench flat quick-change body interface.