Used Gmc Cargo Van '02 GMC Cargo Van - Why Do Rear Brakes Have Both Drums And Rotors?

'02 GMC Cargo Van - why do rear brakes have both drums and rotors? - used gmc cargo van

My neighbor has one. I will help you, the rotor, and once this is done, we see a new set of drum brakes, even within one side of the caliper on the rotor. The drum and rotor together forged. I have one of them, my companions, friends, or the car before. What is the purpose of doing this? Who knows why? (I think it is a Van Long rear cargo floor, made to carry cargo long and 2 meters above the full-size van). Used to move, as is the carpet with a carpet installer. Why so?