Pilot ball liner pens are roller ball pens that use ball point pen-like mechanism with water-based ink, which is more fluid and allows better color saturation with a smoother feel. Pilot ball liners are made of cemented carbide alloy ball and polyacetal ball seat. The ink flows smoothly just like marker pens! Use Pilot ball liner pens with ease to produce a distinctive artistic look and beautiful results for all types of writing or drawing tasks. Pilot ball liner medium model BL-5M Offer smooth flow of a marker pen, the sturdiness of a ball point and writing style of a fountain pen,ink color black,blue,green and red. Packing : 12 Pc / Box Tip : Cemented carbide alloy ball and polyacetal ball seat. Widht of stroke : 0.4mm
