[feature] High Quality: The material of the sewing machine seam guide is magnet and metal; built-in magnet, easy to disassemble and assemble, firm and reliable. The metal seam guide is wear-resistant and can serve you for a long time EASY TO USE: Each straight edge guide is designed with magnets to keep your stitches working well even along the straight edge. For sewing perfectly even seams along straight edges and curves. Sewing gauge will improve your sewing efficiency and accuracy WIDE APPLICATIONS: Widely used in the garment industry and home sewing jobs, this sewing machine accessory is a reliable guide for setting seam allowances and sewing straight lines. Magnetic rails greatly increase the efficiency of the garment making process [product information] Product Name: Sewing Machine Seam Guide Ruler Color: silver Material: Metal Packing list (available after purchasing one item): sewing machine seam guide*1 beg to be excused: 1. Due to the long shipping time, the item may be damaged during the transportation, if the item is damaged, please leave us a message through the official website immediately before leaving a comment, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Color may vary by monitor.