8x3.8 Slo-Flyer Electric Propeller - Black from APC - LPB08038SF
This prop produces a lot of torque even at low speeds. Computer-optimized design gives these props a thinner profile and more "bite" with less noise. Lightweight molded nylon construction reduces rotating mass for higher output and longer life. Reinforcing carbon fibers help maintain true, constant pitch at any rpm. Slo-Flyer propellers work well with Electric powered Park Flyer-type aircraft.
Includes:

One carbon-reinforced nylon black propeller
One set of small shaft locating rings
One locating ring instruction sheet

Optional:

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