we purchased direct from Tmotors company as a dealer.you can verify from T motors.
The Tmotor AS series is designed for fixed-wing aircraft. It is cheaper than the AT series, but manufactured with the same quality standards as the high-end AT.
 
Features:
Light and robust, hardness assured.
Reduced moment of inertia, rapid response and 0 delay.
Smooth and precise operation.
package includes:
motor with acceossries