TOMBOW Refill for Rollerball Pens Fine Tip 0.5 mm Line 0.3 mm BlackRoller Mine Ball Diameter 0.5 mm (approx. equals a line width of 0.3 mm) With roller refills all Tombow skates become a long-term companion. Depending on your personal preferences skates can be reloaded in three different ball diameters and three different colors (blue red black). The high-quality pigmented ink is additionally protected against drying out by a plastic ball. This must be removed before first use.
