AKC X-Treme Shadow 11" Carbon Fiber Stiletto Automatic Knife D2 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: 11.5 cm – 4.53" Blade thickness: 3mm - 0,12" Weight: 135 gr-4.76 oz Blade Material: D2 stone washed Handle Material: Carbon Fiber Made in: China