Zebra Z-Grip Smooth Rectractable Ballpoint Pen 1.0mm Tip Black/Light Blue/Green/Pink/Violet (Pack 5) The Z-Grip Smooth is the next generation of Zebra’s best selling Retractable Ballpoints. It features super smooth low viscosity ink for an effortless writing experience. Complete with rubber grip for additional comfort and the transparent coloured barrel allows constant monitoring of ink consumption.