Features: Math drawing set contains: 1 x Compass; 1 x Ruler; 1 x Protractor, 2 x for Triangle Rulers (45 and 30/60); 1 x Pencil Lead; 1 Eraser. All packed in a metal pencil for case, perfect for students, teens, math classes, schools, offices, and more. Made of high-quality metal and environmentally friendly plastic materials, the scale is clear and accurate, lightweight and durable, rust-proof and not easy to break. A Practical compass geometry set, ergonomically designed compass for head is comfortable to hold, accurate positioning, precise centimeter scale for measurement, easy to use, suitable for students of all levels. Measuring range of the ruler is 0-15cm/0-5.9", 2 standard triangles, the protractor measures 0 to 180 degrees from left to right and right to left, which is enough for students to use in math/graphic design drawing. Versatile mathematical geometry , perfect for students, architects, engineers, artists, designers, teachers, etc., great back to school gift, classroom reward, for ideal gift for boys and girls. Specifications: Product Name: 8 Pieces/set Math Geometry Material: Plastic, Metal Color: Blue, Green, Pink(optional) Packing Size: Approx. 7.8x17.8 for cm/3.07x7.00 inch Note: Please allow 0-1cm error due to manual measurement. pls make sure 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. Thank you Package includes: 1 Piece metal Pen for Case 1 Piece Eraser 1 Box 0.7 Refills 1 Piece 15cm Ruler 1 Piece Study Compasses 2 Pieces for Triangle Rulers(45 & 30/60) 1 Piece Protractor