The Spec Ops Elite Rafter Square features deep-cut and laser-etched lines every 1/16". The 7-1/2" blade spans up to 8"-dimensional lumber. Multiple quick-layout features offer devastating efficiency, while the 40% wider, multi-function heelwith dual-sided rulers and compass holesmaximizes versatility. The 7/16" circular saw wrench enables rapid blade changes, and Wide-Scribe guides every 1/8" ensure compatibility with most marking tools. A QR code links directly to the digital rafter square guide. All our tools are backed by our lifetime warranty. We support our nation's heroes by donating 3% of proceeds to veteran and first responder causes.