Feature: Sensorless motor with Hall element, smooth running, high efficiency, high torque. design for maximum energy conversion. Excellent heat dissipation quality ensures a reliable operating system. The stationary shaft has a longer service life. Low energy consumption and low noise. Specifications: Condition: 100 Percent brand new Item type: Brushless motor Material: Alloy Model: C4250 Shaft diameter: 5 mm Length of the output shaft: 20 mm KV value: 560 kV (adjustable KV value) Maximum power: 1760 W Voltage: 11.1-36 V Speed: 6000-9000 Torque: 1-2 N/m stall torque: 7-8 N/m winding number: 9 number of motor poles: 14P stator slot number: 12N resistance: 0.068 O no-load current: 1, 5-1.6 A (maximum current 80 A) Banana connection: 3.5/4.0 mm Section number of the lithium battery: 3-8S Distance between the mounting holes: 25/17 mm Size of the mounting hole: M2.5 * 4 Diameter: Approx. 42 mm Height: Approx. 50 mm Approximate weight. 257 g Package list: 1 * motor 1 * propeller 1 * bracket 8 * screw Note: Please note that the new and old type of this product will be sent at random. Make sure you don't mind before you order.