The Launch 4’s blade is high-performance CPM154 steel. This powdered metallurgy steel has more uniform distribution of carbides, so it takes and holds an excellent edge, provides good corrosion resistance, wear resistance, and toughness. The blade is DLC coated for an additional measure of blade protection and non-reflective good looks. The Launch 4 opens with a push button, recessed so that it is level with the flat of the handle. This is a safety feature and makes it harder for the knives to accidentally deploy.