The Rotring Tikky Graphic Pens are the replacement of the Rotring Xonox Graphic Pen which was discontinued in 2007. The Tikky Graphic is a disposable technical pen which has light-fast and waterproof black pigment ink. With the free-ink technology system, the ink flows beautifully through the pen and right up until the last drop of ink. The metal encased nib makes it suitable for use with stencils and rulers. Available in seven nib sizes from 0.1mm to 0.8mm.