Features: Compatible alternative part to Juki Wimsew, Prosew sewing machine. It is designed with a brake spring which puts constant , light pressure on bobbins to overcome momentum. This industrial sewing machine coil is suitable for all industrial sewing machines. Also suitable for brother sewing machine B755 Belek, B714. B735 and car machine E40 F40 etc. The zoom size is 1/8, suitable for BROTHER, SINGER, PFAFF JANOME, JUKI, WIMSEW, PROSEW, KATSEW, GTN, etc. Package Includes: 1x Industrial Sewing Machine Bobbin for Case Specifications: Material: steel Color: silver Type:BC-DB1/BC-DB1-NBL note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.