Sophisticated, professional rollerball pen contains black ink infused with color so you can differentiate yourself with every stroke. Airplane-safe ink is engineered to eliminate leaks due to changes in cabin pressure. This uni-flow ink system creates a steady flow of water-resistant ink and smooth, consistent color. Exclusive pigment-based ink forms an indelible bond in paper for intense coloration and document security. Rollerball pen also features a 0.5mm point, clear grip for ink level visibility and an elegant cap with a clip to attach pen to pockets, notebooks, loops and more. Accents on cap and grip area match the color of ink.SAN1832406. 1832406. Uni-ball Uni-Ball Vision Elite BLX Rollerball Pen.