Solid aluminum extruded square will not bend or break Conversion tables for common application needs Deep stamped Made in the USA Made from proprietary steel and heat-treated to control hardness The forged tip allows for a secure grip and maximum contact eliminating stripping The Shockwave Impact Duty accessory line is not only ideal for heavy-duty impact applications Mark lumber and lay out angles accurately when you choose this superior, heavy-duty square. Permanently stamped conversion tables simplify measurement tasks. Thick, bend- and break-proof aluminum frame may be safely used as a saw guide. Included instruction manual and complete rafter tables help ensure proper usage. Square Type: Framing Blade Length: 7quot; Materials: Aluminum.