Thank you for viewing. This is a Clover Pocket Maker. It's very convenient for creating rounded corners on pockets, rounded sleeves on kimonos, and corners on bags, etc. It has support hardware, so you can firmly hold and secure the fabric. There are four types of curves: 1cm, 1.5cm, 2cm, and 3cm. It is durable, easy to use, and made of lightweight metal. To use, place the fabric on the desired curve size, insert the support hardware, and then iron to create a clean curve. The box has some stains from aging. This item has been stored at home for a long time. Thank you for your understanding.