1. Shell material: Plastic 2. Size: About 13.5cm long 3. Weight: About 8g 4. Pen tip: Round head + visual oblique head 5. Packaging: Bulk 6. Crystal visual nib, preview width 7. Double-headed design, writing can be thick or thin 8. Translucent color, even ink out, not easy to wear 9. Special marks, clear ink, smooth writing
