Stop in for a cup of coffee

Where do you buy your attachments? I'm looking for a grinder wheel, thicker one piece, not the sanding pad type I show there. Napa didn't have.
I have a few grinding stones that chuck in my die grinder. All i have ever used them for is kbocking the ridge off brake drums,and the occasional weld grind. I have a 2” carbide wheel i use mostly for knocking welds down.