Model: Standard size roller ball refill by Schmidt; fits 98% of all rollerball pens which accept a standard size refill. Refill reads "SCHMIDT® SAFETY CERAMIC ROLLER 888 M non-dry refill" Made in Germany. (May be used as exact replacement for Pic, Hauser, Schneider, Bright Moon and many other refills.) The refill has a 0.7mm ceramic ball Medium tip for smooth writing. Black or Blue ink. If you need other colors, you may substitute with the other german quality Schneider Topball refill instead. Price is per refill.