The flange itself is quite thick, very good quality. Some reviews have said it's not perfectly flat, which is true to an extent. Anyway, a slight band grind is what you should expect when installing on your cat/collector if you want a precise fit. I had no problem handling the spacers making the light ones for this setup. For $26 you really can't compete. Everything I've bought from Bright so far has been high quality and durable.