Pilot g2 gel retractable rollerball pen, extra fine, 0.5mm, purple ink, dozen g2 retractable pen contains water-resistant, smear-proof gel ink that offers exceedingly smooth writing. Retractable design means no cap to lose. Contoured, latex-free rubber grip provides writing comfort. Refillable. Cushioned grip/water resistant/smear proof ink. this product arrives to most customers in 2-3 business days.