Hex Wheel Coupling Compatible with 4mm Motor Shaft

 

It is a 30mm long hex coupling used to connect the motor to the wheel in your robot vehicle projects. Compatible with 4mm shaft motors. They are often used in smart cars, robotic vehicles or small robots.

They are made of high-quality brass, which allows you to connect the motor shaft and the hub of the wheel. Attach the hexagonal socket to connect the hub of the wheel to one end of the coupling, and the other end of the connection is connected to the engine shaft.