Центровочный разметочный кернер для резьбовых отверстий, 6 винтов, один держатель, размер 7/16 -20

Fast and precise way to transfer the exact location of open and blind threaded holes to mating parts. Ideal for use in layout, tool and die work; also can be used for locating fixtures, air cylinders, chucks, and general repairs. Aids in locating the die in proper relation to the punch on commercial die sets. Black oxide surface treatment. Hardness 48~52HRC. Complete set consists of four or six hardened hardened screws nested in a combined holder and wrench.