As an external rotary adjustment gear manual nail gun, it is a convenient force adjustment nail gun with a nylon wrapping 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 8.4mm concrete steel nail installation. The 2-in-1 directional dynamic handle enhances operational accuracy. It has 4 external force adjustment Settings covering multiple materials and can penetrate 6-8mm steel plates. The integrated nylon wrapping enhances anti-drop performance and can be connected to stainless steel extension rods to complete high-altitude operations. The core components are treated for rust prevention and will not break even after being struck tens of thousands of times by the needle. Its external rotating adjustment gear and nylon wrapping not only ensure the convenience of force adjustment but also enhance the protection of the tool, making it a tool that combin…