Almost all of the small 58mm keychain-sized Swiss Army knives include a small pen blade. It is sharp, and extremely handy for its size! There is also a similar small blade that accompanies the main blade, on the Victorinox Executive knife.
WARNING:The small blade on all types of Victorinox Swiss Army knives is a non-locking blade-- if you push in the wrong direction, the blade will close into the body (possibly endangering fingers).
Uses: The small pen blade on the smaller Victorinox Swiss Army knives has the following lengths (depending on overall knive size):