4 Pack - Refill Black-P900-Fine Tip Schmidt Parker Style Ballpoint Refill Fine Tip - Black Ink - Standard Parker Style ball point refill by Schmidt. Fits all types of pens that accept standard Parker style Ball Point refills. Refill Reads: SCHMIDT Refill P 900 F Length: 3 7/8 inch (9.8cm), Diameter - .230 inch (0.58cm) Made in Germany - Distributed by Lanier Pens - USA, Ensure TOP Quality product - buy direct from Distributor!