Features: Use the integrated motor shaft design, more effective protection of the motor shaft More stable performance, easier to assemble and disassemble Suitable copters: 250mm wheelbase mini quadcopter, light weight fixed-wing copter, indoor 3D airplane. The rotation direction of motor was marked on the front bell, making it easier to determine rotation direction for CW and CCW motors Low CG deisgn, decreasing vibration whe motor runs Light weight built Longer duration of flight Designed for mini multicopters, better flight performance Specifications: Prop Test Data MX1806-2280KV Voltage(V) Propeller (inch) Throttle Current (A) Watts(W) Thrust(G) RPM(RPM/Min) Efficiency (G/W) 7.4 5030 90% 4.4 32.6 210 13530 6.4 APC 6*4 90% 6.8 50.3 280 12030 5.6 5*4.5 90% 6.2 45.9 240 12330 5.2 11.1 5030 90% 8 88.8 380 18510 4.3 APC 6*4 90% 11.3 125.4 460 15160 3.7 5*4.5 90% 10.6 117.7 410 15910 3.5 Model: MX1806 Motor KV value: 2280KV Motor Diameter: 23.5mm Motor Length: 33mm Stator Length:6mm Shaft:4.94mm Batteries:2-3Cells No Load Current:0.3A Top Mounting Holes:None Bottom Mounting Holes: 4*(12*12)mm Weight: 20g Package size: 90 x 45 x 55mm Package weight: 21g Design:CW,CCW Package included: 1 x MX1806-2280KV Brushless Motor