https://youtube.com/watch?v=lBmz_j0Im-0
3 different versions. Black G10 and 440C steel as the “high end” version. Then theres the Green Canvas Micarta version, with thick red spacers, or the White paper Micarta and red spacers version. Both in Chrom-Molybdän-Vanadium steel.

Here´s a link to the Boker page;

www.boker.de/artikelsuche/sanyougo-0-9999-1-0.html