Get them at: https://store.rangevideo.com/search?type=product&q=rvprop*
RV Props are carbon fiber flat paddle style propellors for your next multicopter project.
Switched from Tarot to these, and increased flight time on my 680 Pro.
http://www.rangevideo.com/en/99-rvprops-t-stlye-multirotor-carbon-fiber-flat-style-props
