Wacom on Twitter: "@This1sWrong Hi Brit, thanks for reaching out. I'm so sorry to hear this. The default pen for the Intuos 4 is the Wacom Grip Pen, model name KP-501E-01, and
Amazon.com: Wacom WACOM 2X KP501E2 Grip Pen for Intuos and Cintiq : Electronics
Oem Wacom Grip Pen ZP-501E-00A Intuos 3 and 50 similar items
Wacom Grip Pen (Replacement pen) KP-501E-01
Wacom Cintiq Grip Pen KP501E2 iuu.org.tr
Wacom KP-501E-01X Intuos Cintiq Intuos Pro Grip Pen Japan new free shipping 4949268403122 | eBay