Multifunction twist pen offers a choice of writing instruments in a single barrel and is specifically made for small pockets on military uniforms. Slim design includes black and red medium ballpoint ink and a 0.5mm pencil with a white eraser. Screw-top eraser fits tightly on the pencil top. The all-metal construction provides added durability. B3 Aviator Pen includes a sand finish that won't reflect light. It is FOD compliant for cockpit and ramp safety.