The sleek SureFire Pen IV is precision machined from high-strength aerospace aluminum and hard anodized with a rugged Mil-Spec finish in black. It features attractive stainless steel hardware"the pocket clip, nose cone, and retractor button"that™s as tough and durable as it is attractive. Inside every Pen IV is an imported Schmidt® easyFLOW 9000 ballpoint pen cartridge for smooth, effortless writing. Like all SureFire pens, this rugged, high-performance writing tool is tough enough to provide you with a tactical advantage in emergency situations.