nothing special, no special caliber or anything. just a straight forward build.
the slag from the torch cutting is so hard i couldnt mill it at all. im not a pro machinest i just bought a cheap and mill and am learning so maybe its the endmill i was using i dont know. it was HSS so i thought that should cut it but it wouldnt so i took out the angle grinder.
andafter a few hours of fitting i have the first weld joint pretty much prepped.
its a real clean parts kit. almost no wear on the moving parts.