The Kapro 316 Drywall T Square is a dependable rule perfect for drywall, carpentry or framing. The square has an anodized aluminium finish for the ultimate finish and increased strength. The riveted square is certified at 90 degrees to allows for easy straight and accurate cuts to be made, it also has angle markings at 15, 20, 22.5, 30, 45, 60, 70, 75 and 80 degrees.