This protractor is made from good plastic material with high strength, which is not easy to deform or break, support . Simple and classic design, easy to operate. Besides, this portable protractor is lightweight for using in office, school, architecture, etc. High-visibility scale number, will not easy to fade. Features -Color:Multi -Material:Plastic -Size:12.20X6.70X0.10cm/4.79X2.63X0.04in -With a measurement angle range of 0 to 180 degrees, you can easily and quickly measure objects by using this protractor for math lesson. -Simple colors make numbers and letters clearly visible, the protractor for school is practical for your work and life. -Suitable for students, teachers, designers, architects and engineers, and also widely used for drawing and making notebook margins. -Made from plastic, safe and sturdy, not easy to break, the small protractor is and practical. -Good workmanship, smooth surface, no burrs or acute edges, you can use the 180 degrees math protractor with confidence. Package list: 5 x Protractors