AKC X-Treme Shadow 9" Snake Wood Stiletto Automatic Knife 440c Stone Washed Bayo. To unlock the blade, simply press the top bolster upward, and the same action is repeated for closing it securely. Overall length: 23cm – 9" Blade Length: 9.6 cm – 37.8" Blade thickness: 3mm - 0.12" Weight: 108 gr-3.81 oz Blade Material: 440C Stone washed steel Handle Material: Snake wood Made in: China