As an external rotary adjustment gear manual nail gun, it is a convenient force adjustment nail gun with a different level of appearance among manual nail guns. The external rotary adjustment gear supports force adjustment without disassembly and belongs to an external adjustment nail driving tool. This product supports the installation of 8.4mm concrete steel nails, has 4 external force adjustment levels, covers multiple materials, can penetrate 6-8mm steel plates, and is suitable for engineering decoration. It can be connected to an extension rod to complete high-altitude operations. The core components are treated for rust prevention, and the impact pins are highly durable. The differentiated appearance color scheme enhances recognition, and it is comfortable to hold and easy to operate. Its external rotating adjustment gear and horizontal appearance design not only meet the convenience of force adjustment but also have a visual highlight, making it a tool that combines practicality…