How to change front rotors on 05 scion tc ?

i try to change my rotor but theres something in the middle that holds the rotor and the driveshaft i dont know how to take that off please i need to know whats the name of the part so i can go buy it thanksHow to change front rotors on 05 scion tc ?It is the axle nut socket. Should be a 32 mm socket. You can pick them up at any parts store.

pets

what in your opinion is bes c ide and