Air-hardening, cold-work die steel PlainEdge blade Non-reflective titanium carbonitride This limited-edition Sprint Run expression of the Delica? 4 Lightweight showcases Carpenter? Technologys Micro-Melt PD#1, an air-hardening, cold-work die steel specially formulated to offer both superior wear resistance and toughness. Its advanced alloy composition is further enhanced by the CarTech? Micro-Melt powder metal process, which ensures an ultra-fine, extremely homogeneous grain structure. Functionally equivalent to CPM? CRU-WEAR?, this high-performance steel is the heart of this knifes full-flat-ground PlainEdge blade. To make this elite Delica 4 Lightweight even more distinctive, its blade is cloaked in a non-reflective titanium carbonitride (TiCN) coating and its fiberglass-reinforced-nylon (FRN) handle is injection molded in a deep burgundy color. Consistent with this stunning black-and-burgundy theme, its four-position pocket clip, lock bar, and handle hardware also sport durable black coatings.