What does Class 7 supplies specifically include?

Class 7 supplies specifically include medical material, which encompasses a range of items necessary for medical care and support. This classification includes not only medical equipment and supplies but also repair parts that are vital for maintaining medical instruments and devices. In military logistics, Class 7 is distinctly focused on health-related materials, making it essential for medical readiness and operational efficiency.

The other options do not capture the full scope of what Class 7 represents. Expendable items, custodial supplies, and durable items each belong to different classifications that pertain to various categories of supplies. Thus, Class 7 stands out specifically due to its unique focus on medical-related materials and their components.