Features: 1.Strong Plastic: These French curve rulers are made of eco friendly plastic and premium plastic material, which is lightweight, flexible and durable, not easy to break. 2.Transparent Body: These pattern making rulers are featured with transparent body and high accuracy scale, perfect for measuring and drawing picture. 3.Wide Application: These metric sewing rulers are suitable for clothing design, drawing, cutting, quilting, sewing project. Excellent tools for designers, tailor, students, beginner sewers and pattern maker. 4.7 Round Holes: Each pattern sewing ruler is designed with 7 round holes and 180 degree protractor, various functions could meet your different measuring and sewing demands. 5.Perfect Size: These French curve rulers also feature perfect size that makes it easier to move around with when necessary, but without taking up so much space. specification:Item Type: French Curve Ruler Material: Plastic Quantity: 5 Pieces Product Use: Household Applicable Scope: Most Scenarios Curve Measuring Length: Approx. 29cm / 11.4in ( Manual Measurement, Slight Error May Exist ) Curve Measuring Length: Approx. 30cm / 11.8in ( Manual Measurement, Slight Error May Exist ) PackageList:5 x FrenchCurveRuler