The Greenlee 24477 Punch Unit Assy is a standard round knockout punch. It is designed to punch 1.595" holes in sheet metal. This 40.5mm punch has an adjustable stroke that can be set to three different positions, allowing for various depths of cut. The Greenlee 24477 Punch Unit Assy will help you drill clean and efficient holes in sheet metal, making your work easier and more efficient.
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