-154mm automatic centre punch - no hammer required. -Steel body with hardened Chrome-Vanadium punch pin for long life. -Adjustable spring tension for controlled marking pressure. -Single-handed operation - fast, easy and efficient . -Creates accurate starting points for drilling without slipping. -Ideal for metal, wood, plastics and more. -Knurled grip for comfort and non-slip control. -Compact, durable design - built for workshop or site use.