Spool single use large loads, of those constituted by two end bases and disposed therebetween, and fixed to each other by bracing elements disposed coaxially with the core and inside substantially cylindrical core, and provided with retaining means on the basis, essentially characterized in that the core is formed of a sheet of paper or the like wound and glued repeatedly upon itself, and because bracings, in a suitable number, are substantially tangential with the inner walls of the core, the which serve as armor and only guide.
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