Slide hammer is weight that slides on shaft. Shaft can accept different attachements.
You can get slide hammer from NAPA store. Thats where i got mine. For like 54$ or so. With LOADS of attachements.
One of attachements can be swapped with bolt in large wise-grip pliers (exact same thread size. No idea if its intended or not - but hey.. )
Then you just get bolt threaded as much as you can inside centralizing peg, hook pliers on it and start slide-hammering..
About 3 hits and it flies out.
And its got many uses around Disco.. You'll be blessing yourself for buying one..