Description If you are looking for a seam allowance ruler with reliable design and reasonable price, I will tell you that our ruler will be your best choice. We adopt plastic material, so you can keep it for a long time. It will be a nice sewing helper for you. Features - Material: Plastic. - The seam ruler can help you quickly and accurately create a long and straight hemline to meet your various sewing needs. - A good helper to get the correct seam size, it's convenient to use. - Compared with a separate needle plate mark, it can help you create a more accurate seam allowance. - Made of sturdy materials, durable and safe for a long time use. - It can be used at any time without tools or screws needed. The seam ruler can help you quickly and accurately create a long and straight hemline to meet your various sewing needs. A good helper to get the correct seam size, it's convenient to use. Compared with a separate needle plate mark, it can help you create a more accurate seam allowance. Made of sturdy materials, durable and safe for a long time use. It can be used at any time without tools or screws needed.