Both the Rook and Tasche measure just over 3.5 inches long when capped and extend to more than 5.5 inches when posted, thanks to their elongated aluminum caps. While the Tasche has a cylindrical barrel and grip, the Rook features an hourglass-shaped barrel and grip. The Poche measures just over 4 inches long when capped and extends to more than 5.6 inches when posted. All three pens feature a slim aluminum barrel, a fine stainless steel nib, and a cap topped with a Swarovski crystal. They accept international standard short cartridges but cannot take converters, due to their compact size.