Those bolts will have lock tite on them.
Dont use cheap tools from Harbor Freight for this!
another option is weld a bolt to the head of the stripped bolt, added benefit is the heat loosens the loctite.

 

SNAP...........oh F*CK !!

 

Pegs have red loctite on them. Even with a impact quality torx and an impact, with out heat, the head of the bolt is pretty trashed. I would carefully drill out just head leaving the remaining stud left for vice grips. Then once peg is off, mapp gas heat with a sheet metal shield to protect frame and it will come right out. Heat, then cold rag, then vice grips.

Pentrant is worthless on locktite till you heat it red and then cool it off. Most of the time, after heat and cooling and then PB Blaster, it will screw out by hand.

 

If you don't speak millimeter what he will try to do is use a 1/8" easy out on a 3/8" bolt trying to use a hot air gun to heat up red loctite, what could possibly go wrong here ?