With the large magnetic surface, this Teacher's Triangle Ruler is perfect for classroom demonstrations. The magnetic design holds this triangle in place, making it easy for students to follow along. The detachable handle allows for easy storage and transportation. Made of plastic material, this tool is built to last. Features - ColorYellow -Material:Plastic - Size: 50.70X29.80X0.50cm/19.93X11.71X0.20in -The magnetic design of this triangle board makes it an excellent tool for classroom demonstrations, allowing teachers to easily showcase various concepts to their students. -The detachable handle of this triangle board makes it easy to store and transport, making it a convenient tool for teachers. -The high-strength plastic material used in the construction of this triangle board ensures its durability and use, making it a reliable tool for teachers to use in their classrooms. -This triangle board is specifically designed for teaching geometric concepts, making it an ideal tool for geometry lessons. -The versatility of this triangle ruler allows for a wide range of teaching applications, making it a valuable tool for teachers in various subjects, including math, science, and engineering. Package list: 1 x Set Square