04 corolla help

how do i take the drums off in the back of an 04 corolla i used a hammer to pound on the back but they never came off just brake dust fell out. i kno i can use the two holes that are pre drilled but what size bolts do i use.. or any other suggestions??

Definitely use the bolts. They are metric. I don't know off-hand what size or thread pitch but they're very common. Someone at your local auto parts store or hardware store should be able to help.