Design: Made of class glass, you can see markings through these fabric weights when doing cutting; By using the glass weights, you can weight patterns to fabric without using pins, without piercing or breaking delicate fabric Fabric Weights for Pattern Cutting: Package includes 15PCS glass weights for dressmaking. The sewing pattern weights are easy to use, can be placed directly on the pattern and make cutting easier Wide Applications: These sewing weights can be applied for many occasions, like paper or fabric pressing, sewing work, posters, dress making, clothes making, crafts making and so on Quality Material: The pattern weights are made of high quality glass, reliable and not easy to deform, good to help weights slide without causing wrinkles Weight & Measurement Per Piece: 2.12oz in weight, 2.17 inch in diameter, 0.4 inch in thickness, Perfect for pattern cutting weights secure patterns to fabric without using pins.