Length: 15.8 × 1.38CM<br>Attack head material: 304 stainless steel, tungsten steel alloy<br>Knife material: 5R13 alloy<br>Lighting parameters: Nichia light source, 12 lumens brightness, for 5 hours shiny<br>Refill: high quality gold ball pen<br>Use function: writing, breaking the window, EDC defense, LED lighting, self-defense knife, survival whistle
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