Good quality plastic,Made From Flexible, Yet Sturdy Material, hard and uneasy to break,the clear plastic design allows visibility through, and the black markings make it easy to read. 1 x Stencil, Size: 8.2inch x 5.9inch. The template contains 33 oval shapes with diameters ranging from 4mm to 42mm WIDE APPLICATIONS these templates and rulers can be applied in school, home, library, study room, office etc.Perfect measuring tool for students, artists, designers, architects, engineers, mathematics, network technique, fractional measurement, Contractors, or school learning,and more. We maintain high standard of excellence and strive for customer satisfaction. If you have any questions or concerns regarding your order, please feel free to reach out to us directly and we will get back to you within 12 hours during the work week. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.