Large Gold Fluid Writer Pen GPLLarge Gold Fluid Writer Pen GPL Designed specifically for the application of gold and other metallic paints. Fill up the well with your medium, and let our engineered design do its job of a NO DRIP OR SPILL application, putting that design only where you want it. This comfortable tool holds exactly like a pen, gliding smoothly over the surface. The specialized design of this pen does not allow for interchangeable tips. We, however, have two pens: GPL