The intuos4 ink pen is the ideal input device for tracing and illustrating original artwork and inputting hand written text including signatures with immediate monitoring of results just place your paper or drawing pad on the tablet and off you go the ballpoint pen with replaceable ballpoint refills allows you to sketch and draw in the same way as a conventional pen on paper up to 10mm in thickness please note that the intuos4 inking pen is not compatible with intuos intuos2 or intuos3 tab