CRKT Edgie 2. 4 1/4" closed self-sharpening InterFrame lockback. 5Cr15MoV stainless dual-edged wharncliff blade with thumb slot. A unique diamond sharpening strip is built in the frame. When the blade is closed, this causes a tiny burr to form, acting as a microserration, which helps cutting action. This makes the Edgie ideal for cutting cardboard boxes, rope, cord, garden stalks, etc. Stainless frame with black Zytel scales and blue insert. Textured, grooved TPR insert. Removable stainless pocket clip. Designed by Maj. Howard Pope in collaboration with custom knifemaker Steve Jernigan.