Complete Set of Propellers: Includes two pairs ( 4pieces) of propellers, meeting all four shaft replacement needs for practice flight or crash repairs High Toughness Engineering: Made from premium reinforced nylon for lightweight and shock resistance, reducing breakage risks during collisions and enhancing flight for Avata 360: Specifically 3340s propellers for Avata 360, with installation holes that perfectly matching original size, allowing direct replacement without any modifications Portable and Easy to Carry: Lightweight design not adds load; compact size fit in a storage case for quick outdoor replacements without disrupting your plans Aerodynamic Design: precisely molded with smooth surfaces replicate original design for stable power output, minimizing flight noise and vibrations