This is the APC Propellers 9x3.8 Slo-Flyer Tractor Airplane Propeller.
This propeller produces a lot of torque, even at low speeds. APC’s Slo-Flyer propellers work well with Electric powered Park Flyer-type aircraft.
Includes: Carbon-reinforced nylon propeller, one set of small shaft locating rings and one locating ring instruction sheet
All propellers require balancing (use TOPQ5700)
May need prop reamer, use GPMQ5005 (SAE) or GPMQ50007 (Metric)
Note: This is a tractor propeller, not a pusher propeller. Slo-Flyer propellers are not designed for Glow engines