Do you want to have a professional math functions painting ruler? If so, our math functions ruler is carefully prepared for you. The template has been thickened, and it has good toughness and is not easy to break. Can be applied for home and office using, students and teachers using. Features -Color:Transparent -Material:PVC -Size:10.90X10.90X0.10cm/4.28X4.28X0.04in -Size:8.00X8.00X0.10cm/3.14X3.14X0.04in - Practical, and safety PVC material. Simple and convenient to use, you can buy it for you. - Fine craftsmanship PVC material ensure that it won't fade or deform during use. - Multi-functional and versatile, can be used for a variety of fields, such as construction, professional applications, architecture, engineering, school supplies, etc. - Suitable for art design, building template, architecture, home office drafting, drawing. - It will work well in architecture, art design or drawing template as school work, bring you convenience. Package list: 16 x Math Functions Rulers