Sarasa SE Gel Retractable Pens contain a smooth-flowing, water-based, pigment gel ink. Smooth gel ink delivers scratch-free writing. Ink is also acid-free and archival quality. Translucent barrel provides visible ink color and supply. Soft rubber, textured grip provides writing comfort and control. Grip is made of latex-free rubber. Engraved metal clip offers a reliable way to attach the pen to pockets, notebooks, binders and more. Press tall plunger at the top to retract point. Color of plunger indicates ink color. Refillable.