This H2205 stands between 1806 and 2206 motor, for those who needs higher thrust than 1806 motor but less weight than 2206. This is the latest version of the motor and does include the set screw for the shaft (not pictured).
The 2633KV is suitable for both 4 inch propeller on 3-4S or *5 inch propeller on 3S - 4S
*If it gets too hot with 4S + 5040/5045, then you may need to change it back to 5030
It assembled with Imported NMB Bearing and Copper Wire to maintain the quality. The motor has been balanced by Motion Balancing Machine so you will see the colored balancing mud in the motor.