Durable outdoor knife. Its very strong blade (2. 5 mm thick) is serrated over 3. 5 cm to cut natural or synthetic ropes and has a shackle key for 4 to 10 mm shackles. Its handle is water-resistant and whitstands extreme temperatures. It is equipped with a pealess whistle. Color : Blue, Blade length: 8. 5 cm, Steel: Sandvik stainless steel 12C27, Handle type: Fibreglass-reinforced polyamide to whithstand shocks, humidity, and extreme temperatures(-40°C à +80°C).