General Tools Mini Heavy-Duty Automatic Center Punch #79 - Nail Punch Tool to Mark and Scribe - Machinist Tools From the Manufacturer Use automatic center punches to precisely punch material for drilling and layout work. Spring operated tool drives hard point in a single one-handed operation that eliminates striking a punch with a hammer. Spring tension cap can be adjusted for light to heavy strokes. Punch depth can be set for repetitive work. This is a steel automatic center punch for making lighter markings than #78. It has a black oxide finish that inhibits rust. The all-steel body is 5" with threaded, replaceable hardened steel point and shaft. The body diameter is 1/2". Features STEEL BODY: This must-have pre-drilling leather punch tool can scribe, stake, and prepare nail and screw holes. It's easy to use, and the one-handed spring tension adjusts for light or heavy strokes and marking on wood and metal surfaces. REPLACEABLE HARDENED STEEL POINT: Fabricated from durable steel, our convenient metal punch tool has a conical-shaped steel tip that allows you to safely drill holes at the exact location without slipping and damaging the work surface. ADJUSTABLE SPRING TENSION: Ideal for metal workers, machinists, automotive repair professionals, and DIYers, this spring-loaded center punch has an automatic mechanism that strikes with downward pressure so that you don't need a hammer. KNURLED FINGER GRIP: Allows a sturdy grip, easy handling, and less slippage, avoiding potential injury. It measures 6" and has a rust-resistant black oxide finish. Add it to your accessories and other hardware essentials. GENERAL TOOLS: We have been a recognized leader in the innovation, design, and development of specialized precision tools for many years. We encourage craftspeople, artisans, and DIYers to work smarter, measure better, and increase productivity. DELIVERS A HIGH IMPACT STRIKE - one-handed spring-loaded impact operation, no hammer required ADJUSTABLE SPRING TENSION - adjustable spring tension cap for light or heavy strokes and marking ALL STEEL 5" BODY - center punch has an all-steel body, knurled finger grip and rust-resistant black oxide finish, 1/2" body diameter STEEL POINT - threaded, replaceable hardened steel point and shaft AUTOMATIC PUNCH DEPTH - center punch can be set for repetitive work USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.