4 Pieces Metal Ruler,Stainless Steel Ruler,12 Inch and 6 Inch Steel Drawing Rulers,School Measuring Ruler Inches and Centimeters with Conversion Table {POLISHING SURFACE}:For your safe and comfortable,our metal ruler employ grinding and polishing process,it ensure the surface of centimeter ruler is smooth with no burr. {GREAT VALUE SET}: The Set Includes 4 Steel Rulers In 2 Different Sizes: 2 pack 12 inch and 2 pack 6 inch with 0.9mm thickness avoid sharp edges. Great thickness of our steel ruler is not easy to be bended. {STURDY METAL RULERS}:Our stainless steel ruler is made of high quality stainless steel,which is extremely firm and pressure-proof,rust proof,these sturdy stainless rulers can be used for a long time.Hard but not heavy. {INCH&CM MEASUREMENTS }: These small metal rulers with prefect design of two measurements:Metric and Imperial Graduation,which is convenient for your daily use.Clear marks ensure a precise measurement. {FEATURE RICH}:Conversion table on the back side(inch to cm),which is design for quick calculate. Our stainless steel rulers with hanging hole design makes it easy for hanging,and you also can put your small steel ruler on your box.Premium Steel manufacturing,durable material and multiple length of our precision rulers are suitable for office,school and home usage.