Amazon.com: uxcell RC Folding Propellers 8x4.5 Inch Spinner Size D44xH44mm 3mm Motor Shaft Dia. 2-Vane for Airplane Helicopter Toy Nylon : Toys & Games
CAM Folding Propeller with Spinner 7.5 x 4 (19 x 10 cm) | Graupner USA
Graupner/Super CAM Folding Propellers
Amazon.com: uxcell RC Folding Propellers 8x4.5 Inch Spinner Size D44xH44mm 3mm Motor Shaft Dia. 2-Vane for Airplane Helicopter Toy Nylon : Toys & Games