Professional quality: The pen is non-toxic, water-based and acid-free, has excellent archival quality, and long-lasting bright pigment ink, will not stain, fade, bleed or dive.

Convenient storage: Pens are stored in a convenient bag organizer, and the points of each pen are stored in it, so you can always keep them organized and ready to use.

Including 9 microtip nib sizes: 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.45mm, 0.5mm, L, BR. Outstanding professional technical writing and drawing pens for artists, writers, illustrators, students and teachers, providing consistent free-flowing ink and having a smooth glide, allowing you to create perfect clean lines every time you use it.

note:
Please call back evenly to avoid bleeding. Keep the pen tip perpendicular to the paper to draw lines with the same thickness.
After use, be sure to replace the pen to prevent it from drying out.
Technical index:
Quantity: 12
black
Pen size: 4.72 inches
Size tips, you can get very detailed information in the design.

0.15 mm (003), 0.2 mm (005), 0.25 mm (01), 0.3 mm (02), 035 mm (03), 0.45 mm (05), 0.5 mm (08), 1 mm, 2 mm, 3 mm , S, L, BR