Ti2Design's TechLiner pen merits praise. It features an uber-smooth Uni SXR-7 Jetstream ballpoint ink cartridge, which can be replaced with a large selection of tip sizes and colors. The cap is retained by rare earth magnets found in the cap and at both ends of the pen. It's effortless to use and entertaining at the same time.
This TechLiner Shorty model has an acid washed copper body with a milled cross-hatch pattern to facilitate slip-resistant grip and includes a removable polished bronze clip. The TechLiner is an attractive design with a precision build that won't go out of fashion.