4X Schmidt 888 F Safety Ceramic Rollerball Refill Green/Red/Black/Blue Fine Tip Pack Contains the following Schmidt Refills: (1) Green 888 Fine (1) Red 888 Fine (1) Black 888 Fine (1) Blue 888 Fine Description Premium Schmidt 888 Fine Tip Green Red Black Blue Ink Plastic Body Safety Ceramic Roller Ball Refill.Features Standard size ceramic tip roller ball refill by Schmidt.Fits 98% of all Rollerball pens that accepts a standard size refill.Refill Reads: “SCHMIDT Safety ceramic roller 888 F”Made in GermanyTechnical SpecsNib Size: Fine (0.6mm)Colors: Green, Red, Black, BlueLength – 4 5/16″ (11cm)Diameter – .245” (0.62cm)Extended Information Schmidt 888 Metal Roller Ball Fits: Acme, Aurora, Bexley, Bossert & Erhard, Caran d’ Ache, Colebri, Conklin, Conway Stewart, Delta, Diplomat, Faber-Castell, Itoya, Jean-Pierre Lepine, Lanier, Marlin, Montegrappa, Monteverde, Pentel, Retro 1951, Recife, Rotring, Stipula, Visconti, Waterford, Waterman, Yafa, Yard-O-Lead, and many other roller balls made in U.S.A., Taiwan, Korea and China. Made in Germany by Schmidt – Distributed in the USA by Lanier Pens