'Murica! Check out the detail in these stunning, 12mm, US Flags metal design stamps! Stars and stripes all the way! This metal design stamp has the following dimensions: Shank size: 1/2" Stamped impression height: 12mm Rated for stainless: use tilt-and-tap method, or stamp perfect press for best results. The best impression will be in softer metals because of the size of the image.