Wacom on Twitter: "@AktasZulfikar Thank you for reaching! These pens are compatible with the Intuos2: XP110 Intuos2 Inking Pen XP120 Intuos2 Stroke Pen XP300E Intuos2 Classic Pen XP400E Intuos2 Airbrush Pen XP501A
Wacom Intuos2 4x5 USB Tablet with Grip Pen
Found: an Axiotron Studio Pen substitute? — Surface Pro Artist