Xezo Speedmaster 900-1 Black Ballpoint Gel Refills - Pack of 2

2 Ball Point Refills (black ink). German-Made. Medium line. Fits all Xezo ball point pens. Fits other brands selectively; interchangeable with standard Parker ballpoint refills. Approximate writing length per each refill is: 6500 meters/21,325 ft / 4.03 mi. Length: 98 mm (9.8 cm) / 3.85 in. Diameter: 5.8 mm (0.58 cm) / 0.228 in. Fits all types of pens that accept standard Parker style Ball Point refills. Shelf life is approximately 4-5 years. Shelf life can vary depending on the temperature and moisture of storing. Avoid extreme heat or extreme cold.