Dianshi 5A Retractable 0.5mm Black Carbon Neutral Pen Bullet Tip Double Ball Quick-Dry Smooth Student Exam Pen Back-to-School Essential - Black Barrel 12-Pack

Professional-grade carbon black pigment oil-based ink

Fast-drying and waterproof to prevent smudging and maintain clean exam papers

Stable ink flow with no skipping or leakage

Resistant to fading and long-lasting preservation

Dual ballpoint tip with precision spring mechanism to prevent ink leakage and accumulation

Triangular ergonomic barrel for comfortable grip and reduced hand fatigue during long exams

TPR soft rubber grip for enhanced comfort; light yellowing of light-colored grips over time is normal and does not affect writing performance

Anti-shake pen tip structure to ensure stable handwriting and prevent messy strokes

Silent click mechanism to avoid disturbing others and maintain focus during exams

Large capacity 5A refill to reduce pen changes and save exam time

Pen clip with symbol "A" representing good luck and success

12 pens per box

25 years of expertise in pen manufacturing

5A workshop with advanced craftsmanship

Sterile and dust-free production environment

Strict quality control and rigorous testing

Authorized use of CWIA exam pen certification trademark

Certified by China Writing Instrument Association and international pen associations

Designed specifically for exam use with smooth, fast-drying, and stable ink performance

Suitable for daily writing and practice as well

For users sensitive to grip discoloration, dark-colored grip versions are recommended to avoid visible yellowing over time