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1. Destornillador, de especial utilización en tornillos de cabeza hueca hexagonal, caracterizado porque está constituido por un vástago recto que en un extremo está provisto del correspondiente asidor y que en el restante extremo posee un remate sustancialmente esférico que presenta un afacetado en sentido axial de contorno hexagonal, de modo que en cada caso la sección transversal mayor se corresponde con la del perfil hexagonal interior del hueco de la cabeza del tornillo.