Features: Compact black/bronze finished Bohler N690 steel blade. Dual thumb stud openers with bronze washers. Milled bronze anodized aluminum handle scales. Liner lock mechanism. Loop-over deep-carry tip-up pocket clip. Description: The Extrema Ratio BF1 is a tactical folder that can take any abuse you give it. The knife can be easily opened with either hand, and locks open securely with the liner lock. This compact pocket knife is a light and sturdy addition to your EDC collection, with the deep-carry pocket clip allowing the folder to disappear seamlessly into your pocket until you need it. Extrema Ratio Knives are tough, purpose-built tactical knives that come in all shapes and sizes.