Graupner Copter Prop 10x4 are two-blade 10" propellers with a low 4" pitch, designed primarily for multicopters, but also suitable for slow-fly and sport RC models. The extremely thin blade profile reduces weight and increases efficiency, allowing the propellers to extend flight time and support stable flight. They run smoothly and quietly, making them suitable for copters used for aerial photography. They are made of glass-fiber-reinforced polyamide and feature a hole for a 5mm motor shaft. Sold as a pair – one clockwise and one counter-clockwise propeller.