Description Filled with high-quality ballpoint ink and compatible with a huge selection of pens, the Schmidt ISO635 is a great choice for a reliable, go-to refill. Medium point width Black ink Made in Germany Widely adopted by many manufacturers Schmidt Manufacturing Schmidt is a refill manufacturing expert. Schmidt is the most respected refill and component manufacturer in the world. Mont Blanc, Lamy, and many of the top brands in the market use Schmidt to manufacture their own branded refills. For more than 75 years SCHMIDT Technology has been developing and producing highly sophisticated solutions for major brands of writing instruments all over the world.
