Wacom INTUOS4/CINTIQ21 Grip Pen Cordless, Battery-free 2nd Generation Wacom Tip Sensor 3 Standard Black Pen Nibs Pen Stand. Compatible with Previous generation Intuos Pro PTH451, PTH651, PTH85, Intuos5 all models, Intuos4 all models, Cintiq 21UX DTK2100, Cintiq 24HD, Cintiq 24HD touch, Cintiq 22HD, Cintiq 22HD touch,Cintiq 13HD, Cintiq Companion, and Cintiq Companion Hybrid.