<p>Machined housing with four fan-style cooling holes that pump air through the engine while it is running.Rear threaded mounting holes with both 16mm and 19mm hole spacings fits a of applications.</p> <p>Specially designed NdFeB magnets with high temperature rating for trouble-free operation.High Temperature 140 Celsius (356 Fahrenheit) rated wire is used for winding the motors to minimize the risk of burning the motor.</p> <p>High quality epoxy coated stator plates on the inner surface to prevent winding shorts. 0.20mm stator plate id used on this 5010 engine.</p> <p>High quality shielded and permanently lubricated are used to control the motor shaft in all of our motors.</p> <p>High temperature adhesives are used to stator windings and prevent them from shifting and pinched or shorted out.</p> <p>5010 360KV High Torque Brushless Motors for MultiCopter QuadCopter Multi-Axis Aircraft</p> <p>KV (rpm \/ v): 360KV</p> <p>Anti-tooth</p> <p>ESC: 20-40A</p> <p>Best works with props from 14-16 inch</p> <p>Shaft size: 4mm</p> <p>size:Engine size 50 x 10 mm</p> <p>Material:metal</p> <p>colour:Silver + Black</p> <p>Package Contents:</p> <p>1 set x Brushless Motor 5010 360KV</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>