SMOOTHERPRO Titanium Bolt Action Pen | Compatible With Parker Refill | Retractable Refillable Metal Pen | for Men Women Business Writing Office Signature(GT02) | Color NaturalEXCELLENT QUALITY: This pen features heavy duty titanium construction that ensures stability in harsh temperatures, ensuring lasting quality. Its durability is unmatched. The pen feels solid in the hand and has a noticeable weight that makes it easier for people to hold on to securely. BOLITING MECHANISM: Unique clip bolt design coupled with a high tenacity spring not only facilitates the smooth advancement and retraction of the pen refill, but also