Центровочный кернер для резьбовых отверстий, самовыравнивающийся, размер 3/4 -10

Self-Aligning Center-Locating Transfer Punches for Threaded Holes Also known as transfer screws, these punches have a uniform shoulder height so you can quickly transfer multiple hole locations at once. Thread the punches into closed-end holes and tighten with pliers or a wrench, then strike the workpiece with a hammer to mark the holes.