Features: Stainless Steel Square combines corrosions resistant stainless steel ruler for ±0.5mm precise, featuring reinforced aluminum alloy base and 90° angled verification for professional woodworking and construction applications. Engineered with aircraft grade aluminum base, this multi functional layout tool maintains structural stability under 50% greater pressure than plastic alternatives while offering convenient hanging holes for worksite organization. Essential for construction crews requiring reliabled measurement solution in workshop environments, remodeling projects, and outdoor job sites with demanding conditions. Perfect for verifying right angles in cabinet installations, or ensuring precise cut in craft workshops where millimeter levels accuracy determines project success. The integrated hanging design and stainless steel construction, eliminating measurement errors caused by warped plastic tools. Specifications: Component Stainless steel+Aluminum alloy base Size:Approx.150x105mm/5.9x4.13inch Size:Approx.200x115mm/7.87x4.52inch Size:Approx.250x125mm/9.84x4.92inch Size:Approx.300x130mm/11.81x5.11inch Size:Approx.500x175mm/19.68x6.88inch Package Includes: 1pcs Right Angled Ruler note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.