Folding Pocket Knife
Folding Pocket Knife, like the name says it, knives with folding blade. These blade have been around us for centuries. We have just perfected the design and functionality of them. A folding knife is no different than an assisted opening knives. The only difference between them is that assisted opening knives uses spring or some sort of built in feature to open the blade, whereas folding blade is open with 2 hand action.
Spring Assisted Knife