Amazon.com: Wacom Bamboo Duo 2-In-1 Stylus with Pen for Kindle, Apple iPad, iPhone, iPod touch, Android and other Capacitive Touch Surfaces (CS150W) : Cell Phones & Accessories
Bamboo Stylus Duo 3 for Media Tablet/PC - Grey (GS-170/K0-BX) 4949268619189 | eBay
Wacom Gen. 4 Bamboo Stylus Duo with Ballpoint Pen for All Tablets, White (CS191W) - Walmart.com
Bamboo Duo: essential two-in-one stylus plus pen
Wacom Bamboo Duo 2-in-1 Universal Touchscreen Digital Stylus + Ballpoint Pen 4949268618496 | eBay
Wacom Carbon Fiber Nibs for the Bamboo Solo/Duo Gen-3 ACK20610
Wacom Bamboo Duo Stylus + Pen for iPad (CS110K) [Old Version]