Titanium Alloy EDC Multi Tool Keychain Outdoor Camping Tool Hakatoy Multi Tool Keychain Small Multi Tool Carabiner Keychain Mult MercadoLivre Mini Pen Multi Tool Keychain 5 in 1 Multi Tool Key Chain Versatile Mini Screwdriver The Best Mini Multi Tools Sized to Fit in Your Keychain. Small in size but big on functionality, the Mini Multi Tool Pen is the ultimate pocket companion. Available in sleek black or vibrant blue, this pen combines writing with versatile tools to handle everyday tasks with ease. Perfect for problem solvers and adventurers who appreciate practicality in a stylish design. Details The keychain pen includes a ruler, screwdriver and touch screen stylus.