Cheyenne creates Magnum Safety Cartridges that are recognized for their innovative medical-grade materials and safety membrane that prevents ink from leaking. In addition to patented construction, you’ll be able to work quickly because with this unique Cheyenne cartridge system you no longer have to stop and change tubes or grips. You’ll be able to save considerable time and effort, allowing you to focus on what’s really important—you customers and your art. Add tools to your arsenal that just won’t quit. Shop today and receive free shipping on orders of $100 or more.