Package Includes: you will receive 10 clear plastic rulers with inches and centimeters scale of 8inch/20cm. The ruler is 8.2inch long and 1.15inch wide. Material: made by premium plastic , very durable and sturdy. Its not easy to be broken, so let it become a good assist in your life. Application: its widely used by artists, engineers, students, designers, architects and teachers. A good tool one should have in school, office, and family. Design: transparent ruler with precise scales, and inch scale on one side and metric on the other, help you to measure objects more conveniently. Great Gift: Useful and handy in daily life, they are very suitable to be the gift for students and teachers.