Which statement about impact wrenches is true?

Impact wrenches are specialized power tools commonly used in various applications, particularly in automotive and industrial settings. The correct statement about impact wrenches is that they possess a high power-to-weight ratio. This characteristic enables them to deliver substantial torque while remaining relatively lightweight, making them effective for tasks that require significant force to fasten or loosen nuts and bolts quickly.

The high power-to-weight ratio is essential in situations where operators need to manage the tool easily without sacrificing the power necessary to perform demanding fastening tasks. This feature is particularly beneficial in environments where efficiency and speed are crucial.

In contrast, the other statements reflect misconceptions about the capabilities of impact wrenches. They are not limited to light fastening; rather, they excel in heavy-duty applications as well. Furthermore, while they are useful for maintenance purposes, their design allows for a wide range of uses beyond just maintenance tasks. Additionally, a low power-to-weight ratio would not facilitate the effective performance required in fast-paced environments, making that statement inaccurate.