These telescopic bars have a normal 1/2 inch square drive that any 1/2 drive socket can fit into. You don't have to use the socket it comes with.
It's not a torque wrench - its just a wrench with a telescopic handle that is at least twice as long as that which normally comes with the car kit. It gives you much more leverage when trying to free the nut. It's the same principle of adding a scaffolding over over an existing wrench bar to make it longer.
It you added an extension tube to the end of a normal click type torque wrench to make the handle twice as long and you applied your pressure to the end this extension wouldn't the torque wrench still click at the correct torque?