sentences:  It is used to tightly fit the tolerances of an existing hole and, when struck, precisely "transfer" the center of that hole to another surface.It can be used, for example, to duplicate the hole patterns in a part, or precisely set locations for threaded holes (created by drilling and tapping) to bolt an object to a surface.A "drift "punch"" is misleadingly named; it is not used as a punch in the traditional sense of the term.