7-Piece Multi-functional Mathematical Drawing Tool Set with Ergonomic Design and Storage Case

​Feature: 1. Metal box for easy carrying, sturdy and durable 2. Metal compass with smooth lines and precise drawing. Stainless steel is more durable and does not require adjustment, making it easy to use 3. Quick core replacement, convenient to use, easy to press, quick lead extraction 4. Can draw wavy lines for precise measurement, make notes with straight lines and wavy lines, making marking more convenient Specification: Material: Plastic Manufacture Country: China Color: Blue, Green, Purple Quantity:7Pcs/set Package including: 1. Metal compass 2. 15cm ruler 3. 180 ° protractor 4. 45 ° triangular ruler 5. 60 ° triangular ruler 6. 1 box of compass lead core 7. Eraser Note: 1. There could be some slight differences in the color tone of the pictures and the actual item. 2. Please allow 1-2mm differs due to manual measurement, thanks. 3. No Retail Box, Packing Safely in Bubble Bag.