Kershaw's Composite Blade Technology combines two top-quality steels into one blade. The distinctive copper line you see on the blade is the result of brazing, which permanently joins the ultra-sharp D2 cutting edge with the strong 14C28N spine. This unique combination of steels not only gives the blade a stunning appearance but also offers the best of both worlds in terms of performance. You can choose between a bead-blasted or BlackWash™ finish for your preference.