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over 200 bucks for that, just get a 3 claw puller put bolt back in but drill a centre mark so the point cant slip first, leave about 10mm loose to start with, place the 3 claws over the back then tighten to remove. Or get the one in video clip or if you have a welder and can weld make one.You will need a 3 prong commodore harmonic puller something like this
View attachment 207551
Sometimes the bolts are very tight to get off. What i do (which some won't agree with) is use a crack bar with a socket, rest it on the passenger side rails and flick the key. Make sure it doesn't start just crank it so the motor turns over a half turn or rotates once and the bolt will be loose. Of course try by hand first, this is the last effort move for getting it off.
**** what an awesome video as it doesn't actually show the job been done and he doesn't even seem to remember the names of the tools he's using.
More knowledge than you, what did I steal your thunder..Another one of "Trevor's" humdingers !! He a real champion at screwin' everything up with his immense knowledge.