Features: *Versatile Drawing Tool: This multifunctional drawing ruler is specifically designed for square tube rounded corners and right angles, enabling precise line drawings without the need for cutting. *Size Options: Available in two sizes 20-65mm and 20-80mm—this tool accommodates various square tube dimensions, making it suitable for different projects and user requirements. *Two-way Drawing Capability: Featuring a unique design that allows for front and back side drawing, users can achieve accurate results from multiple angles, enhancing the efficiency of their work. *45-degree Angle Guidance: With the added functionality of two-way 45-degree drawing, this ruler facilitates complex designs and ensures that users can create professional-grade angles with ease. *Construction: Built to withstand regular use, this drawing ruler is crafted from robust materials, ensuring longevity and reliability for all your drawing needs. Specifications: Part Name:Square tube rounded corner drawing ruler Material:Metal Size:20-65mm，20-80mm Color:Silver Package Content: 1*Square tube rounded corner drawing ruler Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Made from high-quality materials, our tools products are durable and affordable to meet your daily needs. Please check the product size and model before placing an order to ensure it is the product you need. When you encounter a problem, please contact us and we will help until the problem is perfectly solved. When you receive your product, whether you are satisfied or not, we want to hear your opinion. Every customer can enjoy free refund or exchange service for damaged/quality problem products.