The ZTW Black Widow series offers a range of brushless motors with integrated ESCs for easy installation and setup, ensuring the best compatibility between motors and ESCs. The BW3508 610KV motor is an excellent choice for 500-700 size multirotors, featuring low internal resistance and fast, instant response. The motors are preset as either CW or CCW at the factory, but the rotation direction can be easily changed using a switch on the side of the motor, as shown in the product photos above. Each motor comes with both CW and CCW propeller adapters, as well as a carbon fiber propeller mount and screw set. The motor with wires weighs approximately 135 grams.