You’ll never run out of ink again with Ergosof and PenAgain Original refills. If you’re a student, teacher, medical personnel or journalist and you’re tired of writer’s cramp, Ergosof pens will help you un-cramp your writing style and change your life for the better, but don’t be caught out without ink. Always keep a couple of Ergosof and PenAgain Original refills handy. Helpful for Arthritis and Ehlers Danlos Syndrome patients. Medium/1.0mm ballpoint. Each pack includes 2 refills and are filled with black ink.