Features: High quality and useful. Made of good alloy material, durable and anti-corrosion. Brand new high quality bobbin case for industrial sewing machines. This bobbin case 6-7 is a standard capacity bobbin case that fits many industrial sewing machines. Bobbins stop spinning faster, preventing unraveling or tangling of bobbin thread when sewing operations stop and start. Specification: Material: Alloy Weight: 82g Size: 4*2.5cm/1.57*0.98in Color: Silver Applicable Models: 0302, 0303, 0318, 6360 etc. Package Includes: 1 x Sewing Rotary Machine Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List 1High Quality and useful. 2Made of good alloy material, durable and anti-corrosion. 3Brand new high quality bobbin case for industrial sewing machines. 4This Bobbin Case 6-7 is a standard capacity bobbin case that fits many industrial sewing machines. 5Bobbins stop spinning faster, preventing unraveling or tangling of bobbin thread when sewing operations stop and start.