IRWIN Tools Rafter Square, Hi-Vis, 8-Inch (1794466) 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 Permanent deep markings Can be used as a protractor, saw guide, and tri & mitre square Thick High-Impact ABS Body Hi-Visibility Orange