1. Transparent design, does not block the line of sight, shows the pen tip well 2. Flexible and wear-resistant 3. The 7.0 nib has a built-in spring with dynamic pressure sensitivity, giving more realistic stroke feedback with different pressures (note: 5.0 nib has no built-in spring) 4. Double damping nib, smooth drawing/writing 5. Easy and fast installation 6. Pen is not included
