This is a APC Propeller 9x6 Airplane Pusher Propeller.
One APC 9x6 Airplane Pusher Propeller.
All props require balancing, this is very important, use TOPQ5700.
May need prop reamer, use GPMQ5005 (SAE) or GPMQ5007 (Metric)
The C2 stands for the production run in which the prop was made. Pusher propellers are designed for airplanes that have the engine facing backwards in the rear of the plane, pushing the airplane forward.
Thickness at hub:
Hole diameter: .25