Bertram's Inkwell offers the world's best fountain pens, ballpoint pens and roller ball pens. Pen repair and pen maintenance for all writing instruments, old and new. Bertram's Inkwell has refills for ballpoint pens and rollerballs, as well as fountain pen ink in hundreds of different colors from the biggest brands. When in the Washington DC area please stop by for a visit. Open 6 days a week Monday - Friday 9-6 and Saturday 10-5