The motor is high-torque and high-efficiency CNC machined aluminum case High purity copper windings maximizes efficiency Precision engineered for maximum energy conversion This is motor for entry level and middle level fix-wing.Suit for RC Fixed Wing Airplane Multicopter Name:D4250 800KV 3-7S Brushless Motor Suitable for: RC FPV Fixed Wing Drone Airplane KV value: D4250 800KV Use: Vehicles & Remote Control Toys RC Parts & Accs: Motors Colour:Black+Red Material:Metal Size:100*76*59mm Package Contents: 1*D4250 800KV Brushless Motor(with Accessories) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.