Inside paper, toilet paper, tissue, and napkin producing factories, part of the manufacturing process includes winding the initially fabricated product onto thick, heavy-duty cardboard tubes referred to as cores. To enable the core to spin, a metal shaft must be inserted into the core. Sometimes this shaft is also used along with a hoist to relocate the roll.
In many facilities, a longer shaft is strung through multiple cores. These become known as a "core set", until they are wound with tissue after which they are referred to as a "roll set".