General 79 Automatic Center Punch 1/2 in Aluminum

Product Description

The GENERAL 79 is an automatic center punch designed for marking metal, wood, and other materials without the need for a hammer. The spring-loaded mechanism delivers a consistent, repeatable dimple to guide drill bits and prevent walking. Built with an aluminum body measuring 0.5 inches in diameter and 5 inches overall length, it is lightweight at 0.06 pounds and easy to control with one hand. The knurled grip surface provides secure handling during use. This tool is suited for fabricators, pipefitters, machinists, and general tradespeople who need accurate center marks on workpieces before drilling.

The GENERAL 79 is used in light fabrication, plumbing rough-in, electrical layout, and general mechanical work where precise hole placement is required. Its compact 5-inch overall length fits easily in a tool pouch or apron pocket. The automatic action makes it practical for repetitive marking tasks on a layout bench or in the field. The 4-7/8 inch pin length provides adequate depth of travel for reliable strike force across a range of material hardnesses.

Key Features

• Spring-loaded automatic action — no hammer required for center marking
• Aluminum body construction keeps weight low at 0.06 pounds
• Knurled grip style for secure one-hand control
• 1/2 inch body diameter and 5 inch overall length for a balanced, compact profile
• 4-7/8 inch pin length provides consistent strike depth

Compatibility

Designed as a general-purpose automatic center punch suitable for use on metal, wood, and composite materials in trade and light industrial applications.

Installation Notes

This tool requires no installation. Position the tip on the marked layout point, apply downward pressure until the internal spring releases, and verify the dimple depth before drilling. Inspect the tip regularly for wear or mushrooming and replace or regrind as needed to maintain marking accuracy. Keep the internal spring mechanism clean and free of debris for consistent action.