A pneumatic nailer is a power tool that uses compressed air to drive nails into various materials, such as wood or drywall. It is commonly used in construction and woodworking projects for its speed and efficiency, allowing users to complete tasks much faster than with manual nailing methods. These tools come in different types, including framing nailers, finish nailers, and brad nailers, each designed for specific applications. A compressor is required to supply the air pressure needed for the nailer to function, making it essential for users to have both tools for effective operation.