INNER CUP; B350 Van; 12"x 2.5" Drums. OUTER CUP; B350 Van. 12 x 2 1/2" Brakes. 12" Brakes. 13" Brakes. 4,500 Lbs. Front Axle. Dual Rear Wheels. Exc.Heavy Duty Rear Axle. Exc.Hub. Hub package includes studs and Bearing Races. Serviced w/Wheel Bearing. Single Rear Wheels. Wheel Bearing Race. Wheel Bearing. Hub AND. Inner.