AOKFLY PHONENIX RV2205-KV2500 is a high performance brushless motor for racing drone. It is very light only 29g. The PHONENIX RV2205 uses 0.2mm Japan imported stators that make motor more efficient. And the application of the Japanese NSK bearings can prolong the woking life of motors. The Cooling fins significantly enhances heat dissipation. The 5mm Hollow Steel Shaft design makes the motors more durable.