Brushless Motor BM-2410 Specisications Weight: 60g Shaft Length: 10 mm Matching Volt:8.4~12V Speed: KV 4800/8.4V, KV 5200/12V Max Efficiency: 81% Battery: 2 / 3 LiPo Propeller: 2 LiPo,10x4.7 / 3 LiPo 9x4.7-SF Current: 0.8A - 12A Voltage: 7.2v -12.6v