It is very convenient because you can attach it to the side of the press with a strong magnet. Magnetic design allows for easy removal and transportation. Please note that it cannot be used on plastic parts or other parts where magnets cannot be secured. Used Sewing Machines: Portable professional sewing machine or household sewing machine with iron needles Material: Metal, Color: Silver, Size: 1.8 x 0.6 inches (4.5 x 1.6 cm); Contents: 1. Please check carefully before purchasing: 1. There may be slight glue stains on the adhesive surface of the product. Thank you for your understanding. 2. Please note that the color of the product may differ slightly from the actual product depending on your PC or mobile phone environment and image quality. 3. There may be a 0.2 - 0.4 inch (0.5 - 1 cm) error due to the method of measurement. What is the reasons above for a defective item? Please note that we cannot accept exchanges.