A staple gun is a handheld tool used to drive metal staples into various materials, such as wood, fabric, or plastic. It is commonly used in construction, upholstery, and crafting projects. The tool operates by using a spring mechanism or compressed air to force the staple into the material, providing a secure hold. There are two main types of staple guns: manual and electric. Manual staple guns require physical effort to operate, while electric staple guns use a motor for easier and faster stapling. Both types are designed to improve efficiency and accuracy in tasks that require fastening materials together.