Size/length/open length: 7.5. Blade size: 3.5 approx. Blade thickness: 4mm approximately. Blade hardness: 50-55 hrc with foraged damascus steel a unique combination 1095 and 15n20. Handle material: wood with steel bolsters and brass liner lock. Blade material: damascus steel forged with 1095 and 15n20 with 512 layers when forged.