What is a butterfly knife used for?

A butterfly knife is used for cutting tasks, flipping practice, and sometimes self-defense training. Its split handle rotates around the blade, which lets the user open and close the knife with one hand through a series of movements. In daily use, it functions like a folding knife for light utility work such as opening packages or cutting rope. In practice, most people buy butterfly knives for manipulation tricks and carry appeal rather than for work efficiency. Trainers with dull or false blades exist for safe flipping practice. Laws vary widely, and many places regulate butterfly knives more strictly than ordinary folders because of their weapon reputation.