A metal tool box is typically a portable container that opens to reveal a single compartment for storing tools. Metal tool boxes are often designed for ease of transport and may include a handle for carrying during transport. They are typically smaller and more lightweight than top tool chests, making them ideal for carrying a basic set of tools to a job site or for use in a small workshop.
A top tool chest is a larger storage unit that is designed to hold a larger number of tools. They are typically made of metal and have multiple drawers or compartments for organizing and storing tools. Top tool chests are often used in larger workshops or garages.