Unique liquid ink formula maintains consistent flowing strokes from first word to last. Advanced Ink Feed System provides smooth, skip-free writing. Patented precision point technology. Visible ink supply.Specifications. Global Product Type - Pens-Roller Ball. Pen Style - Stick. Ink Colors - Purple. Pen Type - Roller Ball. Point Size - 0.5 mm. Point Type - Extra Fine. Refillable - No. Tip Type - Needle. Grip Type - Smooth. Barrel Colors - Purple. Visible Ink Supply - Yes. Cap Colors - Purple. Pocket Clip - Yes. Item Weight - 0.32 lbs.