SIGMAFORGE knife is forged from a single piece of solid Cronidur 30 high-performance NO STAINsteel Ice-hardened FRIODUR blade starts sharper, stays sharper longer, and has superior resilience Precision-honed blade and laser-controlled edge ensures ideal cutting angle for sharpness and durability Curved bolster encourages cutting with improved precision, safety and comfort Full-edge utility: whole length of the blade can be used for cutting and chopping and the edge can be sharpened from bolster to tip