These angle measurement protractors can be applied compatible with home and office using, school students and teachers. It is very convenient to use, and it is good compatible with completing your work, and a great gift idea compatible with kids. Besides, it's also an essential tool compatible with any toolbox. The black numbers are clear and easy to identify, then you can read quickly with great accuracy. Feature - Color: As shown. - Material: Plastic. - Size: 10.00X5.50X0.02cm/3.93X2.16X0.01in Note: random pattern - 10 Pack protractors: the material is plastic; Easy to put on your books, notebooks and pencil case. - Measure protractor with accurate number: the black numbers are clear and easy to identify, then you can read quickly with great accuracy. - Half round shape: the plastic protractors are the common shape protractor, it's universal, you can applied to settle the math problems frequently. - Thick and durable protractors: this clear plastic protractor is thick enough, thus they are not easy to snap. - Measure math tool: the geometry protractors are suitable compatible with painting, measure, homework, technical drawing; Abundant bulk, you can send them to your friends and classmates.Package list: 10 x protractor