I have come to the conclusion that I have been a bit of a stick in the mud when writing letters & cards. I was about to send seasons greetings to the neighbours, happened to have a red Uni-Ball Jetstream SXN-210 close by & decided to change the habit of a lifetime. A retractable rollerball with a 1.0mm tungsten carbide ball it is hard wearing & writes a smooth 0.45mm line. These pens are available in 8 different colours, including violet, orange & green.