Because the JET plane takes important role in of fixed-wingaircrafts, for those hobbyists who want to challenge the jet plane is a goodchoice, in this way, as an essential part, the ducted fan becomes more andmore popular. For material, choose the advanced PC material, which is striking resistance and also high temperature resistance that can the stiffness and toughness, greatly decrease the damage ratio. For appearance, we break down old convention and choose the transparent sea blue color that draws customers' eyes. For design: 1. Fan rotor. Our patent design "air absorbed for cooling motor" can excellently perform the heat dissipation. As we all known, the center of the motor is generate heat, so we use the rotation of the motor generates a blast of air current that makes the motor "heart" cools down. 2. Ducted housing:The classic 3-blade design is the most stable support can the intensity. And in the aspect of motor coil out andassembling, we break down convention: no external diameter limitation for mounting plate, so any size motor is suitable; The wire coil out from the center of the rotor is more reasonable. Color: Blue Material: PC Package Contents: 1 x Ducted Fan 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.