1、Screw locking shaft type of titanium alloy steel shaft, customized bearing is stable, smooth, low noise and convenient. 2、Tooth groove anti-skid design, effectively prevent propeller from skidding. 3、Good heat dissipation performance ensures maximum work efficiency. 4、Made of high quality materials, which are safe and durable for long term use. 5、High precision machining and fine in workmanship. Features: 1. Screw locking shaft type of titanium alloy steel shaft, customized bearing is stable, smooth, low noise and convenient. 2. Tooth groove anti-skid design, effectively prevent propeller from skidding. 3. Good heat dissipation performance ensures maximum work efficiency. 4. Made of high quality materials, which are safe and durable for long term use. 5. High precision machining and fine in workmanship. 6. It has compact structure and long service life. Specifications: Condition: 100% Brand New KV value: 2500 Configuration: 12N14P Motor size: Approx. 27.5 * 27.5 * 33mm / 1.1 * 1.1 * 1.3in Shaft Diameter: 4mm Specification of motor silicone wire: 20#AWG, 150mm Motor weight (including wire): 31.5g Rated working voltage (Lipo): 3-4s No-load current (10V): 51A Maximum power (180s): 784W Maximum current (180s) 51A Test data: KV2500 Throttle point: 100% Voltage: 14.94V Blade: T5150 Current: 46.67A Speed: 26844RPM Power: 697.12W Power Efficiency: 2.29g/W 1 minute full throttle motor temperature: 102 ℃ Package List: 1 * Motor 6 * Screw Accessory 1 * Nut