21.5x13 Carbon Fiber Electric Propeller - Black from APC - LP21513EPNC
APC propellers are high quality, competition proven propellers without the high quality price tag. Perfect for various prop-driven RC aircraft.

Includes:

One 40% Carbon \/ 60% Nylon black propeller
One set of adapter rings that adapt to different motor shafts
One instruction sheet

Optional:

All propellers should be balanced before use. We recommend using the BenchCraft Precision Propeller Balancer