EnerGel XmRT is a gel rollerball pen with the Xtra in comfort. The pen writes wonderfully soft and longer than conventional gel ink rollers. It dries in no time at all, making it ideal for frequent writers and left-handed users. With its line width of 0.5 mm, it provides a distinctive typeface. With push mechanism and metal tip. Refillable with LR10. Colour: violet. The number on the biros refers to the ball thickness, as it is not customary in other countries to indicate the line thickness.