Feature:<br>Long-life Japanese NMB ball bearings.<br>Efficient Japanese Kawasaki stator steel<br>Rare earth magnets stable up to 180 centigrade<br>Oxygen free pure copper wires<br>CNC machined aluminum case<br>Silicone wire leads<br>Patented balance techniques<br>Unique wiring method<br><br>Description:<br>Brand Name: Sunnysky<br>Item Name: X4108S 380KV motor<br>KV (rpm/v): 380kv<br>Weight: about 113g<br>Shaft Diameter: 6mm<br>Application: specially designed for quadcopter and aircrafts DJI 650/680/690/S800/S900/S1000 Multicopter.<br>Package size: 10 * 6 * 5cm / 4 * 2.4 * 2 in<br>Package weight: 138g / 4.9 oz<br><br><br>Package list:<br>1 * SUNNYSKY X4108S 380KV Brushless Motor