4 Pack - Private Reserve Ink Schmidt P900 Purple Medium Nib Parker Style Ballpoint Refill Medium Tip - Purple Ink - Standard Top Class Parker Style ball point refill by Schmidt. G2 Large Capacity Schmidt P900 Pen Refill. Fits all types of pens that use Parker style ball point refills. These refills are suitable for every rollerball and ballpoint pen that uses the international Parker standard refill. Schmidt P900 ballpoint refills of the Top Class are equipped with high-quality stainless tips and Tungsten Carbide. Refill Reads: Private Reserve Ink P900 Ensure Top Quality - Buy Direct from Lanier Pens - Length: 3.86 inch (98mm), Diameter - .23 inch (5.8mm) Made in Germany by Schmidt - Distributed in the USA by Lanier Pens