This is the Matthew Martin M500 mini cap pen in flamed titanium. Solid, full flamed titanium. The M500 Matthew Martin Pen has a flamed titanium screw top cap that has a durable titanium pocket clip that holds firmly to any pocket or pack. One end of the pen has an integral impact tip. This Matthew Mini 500 pen has a Lamy M22 pen refill and also accepts Parker Pen refills. The solid titanium build makes this Mini 500 pen light and extremely strong. Proudly made by hand in the USA by Matthew Martin.