MATERIAL - Made of 100% Premium quality stainless steel to Prevent Rust & Corrosion, heavy duty and non-bendable.Stainless steel material for your long lasting use. GREAT VALUE - This set includes 6 pack 6 inch (150mm) premium quality stainless steel ruler. SAFETY EDGE - 0.9 mm thickness avoid sharp edges. SMOOTH DESIGN - End sides are smooth with no burr; One end is square, the other is rounded with a hole to make it easy for hanging, convenient storage. GREAT TOOL - Perfect for school or office Perfect for school and training class, paper piecing, craft work. Suitable for carpenter, engineering, architects, handy to use as drawing straight edge or measuring device., Manufacturer: Early Buy