Kaweco D1 ballpoint pen refills are also known as refills for multi-colour pens.

Available line widths are 0.5 (needle, not available in blue), 0.8 (fine) and 1.0mm (medium) in blue and black. The package includes 5 refills.

These refills are suitable with the following models:

• AC SPORT
• AL SPORT
• BRASS SPORT
• BRONZE SPORT
• CLASSIC SPORT
• FROSTED SPORT
• ICE SPORT
• LILIPUT
• SKYLINE SPORT
• STEEL SPORT