EX135BF1CT Extrema Ratio BF1 ClassicThe BF1 Classic is a 4" closed linerlock built around N690 stainless cobalt steel, a material that holds an edge well and resists corrosion without demanding constant maintenance. The tanto blade geometry and dual thumb studs give you reliable one handed deployment, while the black anodized aluminum scales keep weight low and deliver a clean, professional aesthetic. The reversible pocket clip adapts to left or right carry, making this a genuine