EXCELLENT QUALITY - The straight ruler is made of good quality plastic, which is shatter-resistant. It’s flexible and can be bent, but not 90 degrees. The ruler is slightly thicker making them more durable. DOUBLE-SIDED MEASUREMENT - The graduations are marked on the side of the plastic ruler. The smallest unit of measurement in the metric system is 1mm, while on the other side is 0.0625 inch in the imperial system. It can measure objects up to 12 inches or 30cm. FOUR COLOR OPTIONS - There are a total of 32 coloured rulers in our package, with 4 colors for you to choose from: green, red, blue, and yellow. Each color comes in 8 packs, and you can choose different sizes according to your preferences. WIDELY USED - The coloured plastic measuring ruler is suitable for all ages. It is an indispensable measuring tool for designers, architects, craftsmen, etc. The ruler provides you with accurate measurement values and can help you draw straight lines. WORRY-FREE PURCHASE - If you have any dissatisfaction with 30cm coloured plastic ruler, you can contact us. We are dedicated to providing you a satisfactory shopping satisfaction., Manufacturer: MUKCHAP