Need to replace "stripped hex bolt" to add oil on super charger 3800 cone

I've always (if you have the room)used a pipe wrench for a stripped bolt head, also there's a socket head you can buy at Canadian tire especially for stripped bolt heads/nuts or file down the flat edges back on it.

if it is the "filler" hex bolt ,an easyout will work.another way is to find a torx screwdriver that is slightly larger and with a few 'gentle' tap seat and then unscrew