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Made from high-quality, rugged, hard-anodized aerospace-grade aluminum, the SureFire Pen II ($90) is virtually indestructible. A nickel-plated pushbutton tailcap extend-retract mechanism enables single-hand operation. The SureFire Pen II comes with a high-performance Schmidt Technology easyFLOW 9000 ink cartridge and a stainless steel ink tip.