Sherpa Pen Jetball Adapter - Refillable Rollerball for Classic/Special Edition/Balance

Looking for the smooth, expressive flow of fountain pen ink—without the mess of a nib? Meet the Sherpa Jetball Adapter: the easiest way to turn your Sherpa Classic, Classic Contemporary, or Balance pen into a refillable rollerball. This smart add-on gives you the freedom to use any international-standard ink cartridge or converter, so you can enjoy your favorite fountain pen inks with the clean, precise feel of a rollerball. And now, you can choose your style: the Jetball Adapter is available with either the original grip finish or the ultra-modern Tactical Black grip for an upgraded feel and look. Each adapter includes one piston ink converter and one ink cartridge—everything you need to write your way.  *Fits All Sherpa Classic, Classic Contemporary, Sherpa Balance, and Ultimate Sherpa pens.  .accordion-wrapper { margin: 1em 0; } .accordion-item { margin-bottom: 0.5em; border-bottom: 1px solid #ddd; } .accordion-title { font-weight: bold; cursor: point