Kershaw 7500BLK: 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. Then to lighten the Launch 4\'s weight, Kershaw made the handle and integrated backspacer of durable aluminum, anodized in black. 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. For left-handed use, press the blade-release/lock button with your index finger instead of your thumb. The Launch 4 has a single-position pocketclip and carries tip-up.