Ruko Spring Assisted Folding Knife

Spring assisted folders start under thumb pressure and the spring carries the blade the rest of the way open. Ruko builds this model as a spring assisted folder, and the assist is the one mechanical detail worth leading with, because it changes how the knife opens more than anything else on it.

An assist earns its keep with a hand full of something else. One thumb, one motion, and the blade is out, without the wrist flick a plain folder needs when the other hand is busy. That is the reason assisted folders sell to people who open a hundred boxes a day.