Drum hub
I.ll start this other will take over, they are swaged on the front hubs, you will need a drimel (spelling)? tool to cut around bottom of old studs to remove from drum, then hammer out studs from hub put new in hub and swage drum back on,
you can probly get by without swageing new drum on,
hard to find someone that has tools or knows how to swage anymore!
hope this helps!