2WD. F450. F550. Front. TWIN I BEAM. Wheel stud. A threaded rod which is used along with a nut to provide clamping force to the Wheel Hub. A threaded Stud that secures a vehicle's Wheels to the Wheel Hub.. and Amplifier; bearing. and Amplifier; rotor. and bearing mount. Ball joint. Lug. Spacer mount. Included with: Hub, Hub & bearing.