GIFT SET WITH WOODEN PEN AND USB TWISTER WOOD Capacity: Dimension: 10.5 x 17.5 cm Customizing options: Engraving on Twister or wooden pen - already included in the price, if you want to still engrave or imprint a ballpoint pen, contact us Compatibility: Windows XP / Vista / 7/8, Mac OS, Linux. If you want a different ballpoint pen contact us. Available in different capacities.