4,400+ icons with thick line width. Buy the entire family for $99 or try the free sample.
1,401 icons in 26 icon sets
Iron Man Icons are available in sizes 48x48, 64x64, 128x128, 256x256, and 512x512 pixels, in JPEG, PNG, BMP, ICO, ICNS formats.
More quality vector and raster icons are here: http://www.aha-soft.com/iconsets.htm