Optimized performance: F2004 is designed for drone enthusiasts. 1700KV for 4-5 inch 6S settings, ensuring versatility and optimal performance in different flight conditions Stable power, good controllability, make your flight posture clean and neat 1.5mm shaft, suitable for most regular size -country propellers on the market structure: This motor has a solid structure and is carefully designed to withstand the rigors of FPV competitions and long-distance flights. It is a reliable choice for your quadcopter. Application versatility: Ideal for 3-5 inch drones, it can improve flexibility and speed in competitive competitions and provide stable flight characteristics for leisure flights Test model: KV1700 Lead specification: 24#AWG 130mm Shaft diameter: 3mm No-load current (10V): 0.38A Maximum power (60s): 503W Interphase internal resistance: 221m Slot pole: 12N14P Rated working voltage (Lipo): 6S Maximum current (60s): 21.2A The product appearance and printed words depending on the batch, but this does not affect use. Colour:As Shown Material:Metal Package Contents: 1 * Brushless Motor 1 * Parts Bag 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.