Pneumatic impact wrenches, often identified by a specific brand and color designation, are power tools utilizing compressed air to deliver high torque output. These tools are commonly employed for loosening or tightening fasteners, especially where significant force is required. As an example, consider the removal of lug nuts from a vehicle tire; a device of this nature readily achieves the necessary rotational force.
The advantages of these air-powered tools include their power-to-weight ratio, making them relatively lightweight compared to electric alternatives offering similar torque. Historically, they have been preferred in automotive repair shops and industrial settings for their robustness and speed, improving efficiency in tasks involving repetitive fastener manipulation. Their reliance on compressed air also contributes to increased safety in environments where electrical hazards may be a concern.