Fuck this bolt:

BTW, where did you get that spark plug removal tool? I want to order one so next time if I get breakage it'll be easier to get them out. My uncle, who did my plugs, made his own tool similar to this but this would be easier and maybe quicker.
I want to get these damn two piece autolite HT1 plugs out though. We put them in last June. I'll go back with a one piece, like Champion maybe.
Damn, I want to do those LED's.....
Metric yes... But again, I don't think socket selection would dictate breakage of a weak designed plug seeing's how they weren't stripped just snapped in two.
Well, that just might be why you broke all eight, the spark plugs are 9/16".
Even if he did use the wrong size, waht does that have to due with the plugs breaking where they did? The breaks are a known problem with this style plug, hence the reason there are companies that make the special too for extracting them without pulling the head.