Feature:1. EASY INSTALLATION: The brushless disk motor has rear threads with 16mm and 19mm hole spacing, with mounting holes suitable for a variety of applications.2. EPOXY COATING: The inner surface of the highquality stator plate is coated with epoxy resin to prevent short circuit of the windings.3. STABLE AND RELIABLE: The stator windings are held in place with high temperature adhesive to prevent them from shifting, pinch off or short circuiting.4. HIGH PERFORMANCE: All our motors use high quality shielded and permanently lubricated ball bearings to support the motor shaft.5. PROFESSIONAL PRODUCTION: 0.20mm inner diameter of stator plate used in this motor 5010. Fine workmanship, professional manufacture.Specification:Item Type: Brushless Motor Material: Aluminium Alloy Housing, CopperSize: Approx. 50x10mm / 1.97x0.39in (Without Cable and Base)Shaft Diameter: Approx. 4mm/0.16inColour: SilverKV Value: 750KVMaximum Continuous Current: 40AMaximum Continuous Power: 750WRecommended ESC: 20-40ARecommended Battery: 2-6S lipoRecommended Propeller Size: 14-16 inchesApplicable: For RC Multi Axes Aircraft, Quadcopter.Package List:1 x Brushless Motor 1 x Pellet Head 8 x Screws 6 x Heat Shrink Tubing 6 x Motor Connector Note:1. Due to manual measurement, please allow 13mm/0.040.12in error, thank you!2. Due to the difference between different monitors, the picture may not reflect the actual colour of the item.