The Auto Change Knife is a versatile and efficient cutting tool designed for various materials and applications. It features an auto-retracting mechanism, a high-quality blade replacement system, an ergonomic handle design, and a quick blade replacement system. This feature minimizes the risk of accidental cuts and injuries, saving time and effort. The compact size and lightweight design make it easy to carry in your pocket or toolbox, making it a reliable and versatile tool for various tasks.