Since 1925, ACE Rosa Pen Corporation has been manufacturing pens, pencils and pen parts for the writing instrument industry. Whether it is NASA, Coca-Cola, Federal Express, a small business owner, or a consumer looking for a unique gift or party favor, our commitment to quality and innovation has allowed us to work with all types of great clients. Today, the same commitment to detail and quality allows us to offer a Five Year Shelf-Life Guarantee on our 'Spun-tip' refills. MADE IN THE USA the 'Spun-tip' refill is used in ACE pens and is available ONLY in ACE brand pens.