Anyone familiar with Old West movies will recall the Derringer, a small, single-shot pistol typically used only as a last resort. Behold its pen analog, the Derringer Wallet Pen. Made from stainless steel with a brushed finish, this 4-inch long, slim retractable pen is small enough to clip into your wallet for those situations where a more standard-sized pen isn’t available. Its medium point black ink cartridge can be replaced as well. Price is $8.00. Wallet sold separately. Visit Derringer Wallet Pen for more info.