Material - The ruler is made of plastic material, which is clear, , high accuracy, good flexibility. It's easy for us to draw pictures on paper. Measurement Unit - Metric measurements. (1 Inch = 2.54 cm) High quality sewing template tool, 100% satisfaction. High Accuracy - Line detail and clear,perfect tool for manual cutting plate making. Application - Widely used for drawing, cutting, plate and other clothing design for students, designers, pattern maker and tailor, you can choose this ruler sets to DIY. Triple-cornered ruler size: 9.1 x 4.4 x 8.7inch Comma ruler size: 11.8inch Half round ruler size: 10 x 5.3inch Multifunctional ruler size: 10.2 x 4.9inch Multi-style and multifunction rulers you can choose to DIY. Made of flexible plastic. They are one of the most commonly used professional clothing curve feet. Built-in scale design for not easy to wear out and measure clearly according your need. colour:Transparent Material:plastic Package Contents: 1 * triangular rule 1 * multifunction ruler 1 * comma ruler 1 * half round ruler Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.