Pack of 5 Double Side Stainless Steel Measuring Straight Ruler Tool (6Inches) Metric unit 0-15cm on one side and Imperial unit 0-6 inch on the other side Accuracy to 1mm, 0.5mm, other side accuracy is 1/10, 1/16, 1/20, 1/32, 1/50, 1/64 inch. With hole on one side, easy to hang or carry Stainless steel material structure, can be use for long time