5 in 1 Sewing Measuring Tools: 5 practical function--Equivalent to "T" gauge, hem gauge, circle compass, buttonhole spacer, seam allowance gauge. Easy-to-read black numbers add convenience to you Durable Material: the product is made of plastic, safe and non-toxic, sturdy and will not easy to break down, you can use for a long time Practical functions: with two edge measuring system which can make it easy and fast to add seam allowances to patterns or mark lines on fabric, suitable for DIY craft and patch working, lightweight and good to be kept in sewing tools bag 2 Pieces of sliding gauges are included in the package; adjustable and handy tools, enough and convenient for you to use in your daily life 2 Pieces in 2 sizes: 2 pieces of adjustable sliding gauges in 2 different sizes, the big one is 30.5 x 8cm/12x3.15inches, the small one is 17.5 x 6.5cm/6.89x2.56inches; you can use each of them according to your needs