Medium ball point 1.0 mm. Features PaperMate's revolutionary Ink Joy writing system, giving you the best in effortless writing. The Ink Joy writing system starts quickly without dragging, requires minimal pressure from your hand, and delivers crisp, clean lines every time. Triangular shape for comfort and control. Set of 10 assorted fashion coloured pens: Purple, black, mocha, orange, red, magenta, blue, turquoise, green and lime.