What is the primary characteristic of a 7-stand common grade cable?

A 7-stand common grade cable is characterized by its coreless structure, meaning it does not have a central core, which allows for greater flexibility and versatility in various applications. This construction feature enables the cable to distribute loads evenly across its strands, making it suitable for different uses, including tree support systems.

While the options reference various properties, the coreless design is significant because it directly influences the cable's performance characteristics, such as flexibility and resistance to kinking. This is essential in tree support and lightning protection applications, where adaptability to different tree forms and the ability to withstand environmental stresses are critical.

Other choices focus on aspects that do not define the primary characteristic of this cable. For instance, while some cables may consist of a specific number of strands or be limited to particular uses, these details do not capture the essence of what makes a 7-stand common grade cable unique in functionality.