The knife may be man's oldest tool but today it is governed by different carry restrictions in nearly every country in the world. It seems: "if man makes it, he must legislate it." This is particularly true regarding pocketknives in Denmark where legal guidelines govern the size and function of all pocketknives carried in public. One of these parameters is that folding knives not have blades that lock open, and cannot be opened with one hand. Spyderco addressed this by developing a non-locking folder expressly for Denmark called the DK Penknife.

The blade on the DK Penkife is held open by a notched-joint at the knife's pivot. When closing the blade the notch produces roughly twenty-pounds of resistance, functionally similar to traditional slip-joint penknives. To achieve a heightened sense of control and comfort, Spyderco designers added a deep finger choil positioning the index finger on the bottom of the blade directly under the thumb. This lets you choke up nearer the cutting edge with comfort and dexterity. The handle is black G-10 with a tension-wire clip that carries deeply in the pocket, tip-up and either left or right-handed. The CPMS30V laser cut blade is available PlainEdged and ground flat on both sides. The trademarked round hole in the blade makes this knife a Spyderco, yet inhibits the ability to open the knife one-handedly. The DK Pen Knife was originally only available in Denmark, however, we are now opening up sales to the rest of the world so it will not be seen in many stores.