You'll notice the absence of plastic. Other blenders use plastic shafts as a safety mechanism. If the blade gets stuck, the blade/motor connection will sever, as the plastic will either break or melt.

The Total Blender has several electronic monitors that enable it to have a full metal shaft. That's how it transfers all that power to your ice cubes.

The splined connection between the motor shaft and the blades is perfectly suited to transfer the astronomical torque of the motor to the edge of the rotor blades.