1. Spec Performances. High Strength N52 Neodyum Magnets 2. Active Cooling Fins Greatly Reduce Motor Temeratures 3. Low CG, Light Weight Design. Japanese Bearing For Performances 4. Enchance Anti Off U Ring For Safety & Stablility 5. Dual Lock CW / CCW Locknuts Model: RS2205-2300 Framework: 12N14P No. of Cells: 3 - 4S Length:31.7mm Shaft: M5 KV: 2300 Max Thrust: 1024g Diameter: 27.9mm Propeller Suggested: HQ 5045 BN 5045XSH Weight: 30g Tool Supplies: motor Upgrade Parts/Accessories: motor RC Parts & Accs: Motors Use: Vehicles & Remote Control Toys Technical parameters: Value 5 Remote Control Peripherals/Devices: MOTOR For Vehicle Type: Airplanes Four-wheel Drive : Motors Wheelbase: Upper Shell color:As shown Material:Metal Package Contents: 4 x brushless motor(2 CW +2 CCW) Only the above package content, other 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.