When using the screws we provided, pay attention to that if the thickness of the mounting plate of the motor is too thin, it may cause the screws too long and push up to the motor coil. ​ ​Specification: ​Motor KV: 1800KV RPM/V ​Motor Resistance (RM): 0.0648 Ω ​Idle Current (Io/10V): 1.3A/10V ​Max Continuous Current: 28A ​Max Continuous Power: 600W ​Weight: ≈90g/3.17oz ​Configu-ration: 9N6P ​Lipo Cell: 4S_6S ​Motor Diameter: 30.2mm/1.19in ​Motor Body Length: 35mm/1.38in ​Overall Shaft Length: 51mm/2.01in ​Shaft Diameter: 3.17mm/0.12in ​Bolt holes spacing: 16mm/0.63in ​Bolt thread: M2.5×6/M3×6 ​Motor Timing: 5deg ​Drive Frequency: 8kHz ​ ​Package includes: ​1*HF450L-1800KV Brushless Motor