Here we have my Pentel Tradio collection. I like pens and pencils in sets of ten so here is a set of ten. First three on the left are the orginal Tradios with the nylon and rollerball refills. Then you have the silver color pen with the .05mm pencil. Last five are the new Tradios from JetPens. I believe these are the French made ones. On the right are the orginal EnerGels in fine point, the EnerGel all metal pen and the new Pentel K611 Roller in white. This may be the first time you have seen the new K611 Roller. These EnerGels are listed because they all use the same refills as the new Tradios from JetPens. These Tradios are very nice pens that I have used for sometime but these new colors with EnerGel refills are great. As long as you have one of the new Tradios then you can interchange refills with the older Tradios. Add them all to your collection.