Crystal Grey 4 inch 2Blade Polycarbonate Propellers A pack of durable, lightweight 4 inch propellers designed for small multirotor aircraft and hobby drones. Each propeller is made from polycarbonate for reliable flight characteristics and repeated use. Key benefits Precision fit and consistent thrust: 4 inch diameter and 2blade design deliver predictable lift and efficient response for small racing and freestyle setups. Durable material: Polycarbonate construction balances stiffness and flexibility to resist chips and maintain shape over time. Easy installation: Designed for a 1.5 mm shaft and a 5 mm hub thickness for stable mounting and minimal play. Ready supply of spares: Pack includes multiple clockwise and counterclockwise propellers so you can damaged props quickly and keep flying. Specifications Propeller diameter: 4 inch Blade count: 2 per propeller Material: Polycarbonate Hub thickness: 5 mm Shaft fit: 1.5 mm Color: Crystal Grey (also available in Crystal Blue and Crystal Purple) Package contents: 10 CW propellers and 10 CCW propellers Note: Propellers only; other components are not included Performance and compatibility Designed for small FPV and micro multirotor models that accept 4 inch props and 1.5 mm shaft fittings. Twoblade design reduces drag while providing responsive throttle control for agile maneuvers. 5 mm hub thickness offers a secure mount for common micro motor shafts and adapters. Practical use scenarios Replacement spares during race meets or practice sessions when quick prop swap is required to minimize downtime. Regular maintenance kit for a micro FPV freestyle drone to ensure consistent flight behavior after crashes or hard landings. Training and testing sessions where multiple propellers are needed for iterative tuning of motor and ESC settings. Why choose these propellers Purposebuilt dimensions and shaft fit reduce installation hassle and ensure reliable clearance and balance. Bulk pack of matched CW and CCW props simplifies inventory for pilots and builders. Clear color options make it easy to identify orientation and match aircraft aesthetics. Contents recap 10 CW propellers 10 CCW propellers Note: Propellers only; other components not included.