The item is called clockspring, it also carries wires for the airbag detonator. Toyota can sell you a new one which is very easy to install, just make sure the steering is dead straight, install the unit, break the plastic retainer pin and install the steering wheel.
If you are installing a used one, firstly make 200% sure that the part nos. match up. Then rotate it on one side and count the turns, it has to be exactly dead centre when its installed on the steering shaft. assembly.
btw how did you manage to damage yours? Dont tell me its after you had an alignment.