This set of 5 durable stainless steel bobbin cases is perfect for keeping your industrial sewing machines running smoothly. Made of rust-resistant stainless steel, these bobbin cases are built to last through heavy daily use. Each case securely holds the bobbin thread in place as the machine stitches, preventing tangles and breaks. Designed to fit all standard industrial sewing machines, the standardized design ensures compatibility with your equipment. Having an extra set of 5 interchangeable bobbin cases means youll never have to pause production to replace a worn case. Change them out as needed to always keep your machines performing at top efficiency. This value pack provides everything you need to effortlessly manage bobbin winding and replacement across your industrial sewing line.