The rugged, ready for anything hex shaped pen features a super quiet, smooth acting click mechanism! Hexagonal nuts and bolts design will surely impress any tool person. Looks great in any of our acrylics as well as wood and is a great backdrop for our custom polymer clay bodies (like this one). Parker TM style ink cartridge refills available at any office supplies store. Available in the following finishes: Brushed Satin (shown here), Gun Metal, Chrome and 24kt Gold.