Lightweight UK Penknife blades are held open by a notched-joint at the knife's pivot. When closing the blade the notch produces resistance functionally similar to traditional slip-joint penknives. Heightening 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 near the cutting edge with comfort and dexterity. A tension-wire clip carries the folder deeply in a pocket, tip-up and ambidextrously.