Full-tang refers to the construction method in which the steel blade extends as a single, uninterrupted piece through the entire length of the handle. In a display collectible, this is significant because it eliminates the weakest point found in partial-tang or rat-tail designs - the joint where blade meets handle. A full-tang ninjato holds its components together as one integrated unit, meaning the handle will not loosen or separate from the blade over years of display and handling. For collectors, full-tang construction is also a reliable indicator of overall build quality, suggesting that care was applied throughout the piece rather than only to the visible blade.