1. 30*30MM hole is suitable for Eaglepower X6215 X6215S and other motors
2. 40*40MM hole is suitable for Zhuhai Eagle X8308S X8314 X8318 X8318S and other motors
3. Applicable to 30MM diameter carbon tube, can be loaded with 80A ESC
4. This motor base has the function of X6215 coaxial dual motor