Color: Silver YellowKV:1000Max Efficiency: 80%Max Efficiency Current: 4-10A (>75%)Current Capacity: 12A/60sNo Load Current : 0.5A 10V?No. Of Cells: 2-3 Li-PolyMotor Dimensions: ��27.5 x 27mmShaft Diameter: ��3.17mmWeight: 48g4x A2212 1000Kv Brushless Outrunner Motor For Airplane Aircraft QuadcopterPackage Content: 4x A2212 1000Kv Brushless Outrunner Motor (as shown in the picture)