Attack of attack. (Machine-translation by Google Translate, not legally binding)

摘要

Attack end, characterized in that it is constituted by a tubular body, coupled to a complementary body, which has a threaded area, slightly frustoconical, provided with at least one angular milling arranged in the direction of the generatrix, whose milling determines two orthogonal surfaces, of which the minor is radial with respect to the tubular body and the greater is tangential to the imaginary cylinder that contains the edge of said angular milling. (Machine-translation by Google Translate, not legally binding)