When you cut fabric, you can use them to help you hold it in place and make it easier for you to cut. These sewing weights can be apply for many occasions. You will receive 4 pieces pattern weights, sufficient quantity can meet your multiple needs. Size: about 5x5x0.8cm/1.97x1.97x0.31in, easy to use. Fabric sewing weight is great for fabric pressing, sewing work, posters, dress making, clothes making, making and so on.