Reproduction WWII chinstraps for US steel helmets. These will fit all steel pot types (Fixed and swivel-bale, WWII and postwar models). We use our early war blackened brass hardware and our exact reproduction webbing, set the webbing tip and bar-tack the hook. To install you can use a home machine on a very tight zig-zag setting, or hand sew them. (We do not offer installation on your shell. )Made in USA, manufactured by ATF