After I have this pen for some time on a key chain, I want to express an unqualified recommendation. The pen has proved to be very durable. Even the part of the pen, which is very plastic rubust. The lifetime warranty is also great. What I have very like the standard size of mine. You can use mines from Inca, who because of "Space Pen" technology a great "range", alternatively you can take ordinary mines or mine by Schmidt, the -rechnologie also works with this "Space Pen" and also a good "reach" has. In addition to the mode for fast typing, in which one can take the (shorter) pen with a single movement of the steel shell, there is also the opportunity to zusammenzuschrauben a "full-size pen" by the stainless steel shell unscrewing the plastic part of the pen. Another point I want to emphasize positive is the fact that the ball-point pen is not lost / dropped from your keyring. If you einklipst the plastic part in the stainless steel sleeve, then this stays there and does not dissolve accidentally and lost it. For me that's the most important thing, as I have already lost some Schlüsslebund pens from other manufacturers.
