Features: 4 Pieces measure tool set, straight ruler,protractor,triangle ruler. Widely used,common size ruler can be applied in school-home, library, study room, office etc.perfect measuring tool for students, artists, designers, architects, engineers, and more. Durable and sturdy-the plastic straight ruler is made of good quality plastic, hard and uneasy to break. Plastic clear ruler,the clear plastic designs allows visibility through, and the black markings make-it easy to read. Wonderful gift,sweet warm gift for students,teacher,or yourself. Specifications: Material:Plastic Color:Random Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 4Pieces Plastic Clear Ruler Math Set