Item Type: Bobbins Product Material: Plastic Product Specification: 10 Sets Product Use: Household Scope of Application: Most Scenes Package List 360 x Bobbins 10 x Plastic Case 1Light Weight: Transparent bobbins are lightweight and unbreakable, which brings more convenience to your sewing projects 2Portable: Bobbins are stored in a clear plastic bobbins case, which ensures easy portability and space saving 310 Sets: You will receive 10 sets of sewing machine bobbins with case, including 360pcs empty bobbins, 10pcs plastic case, to meet your craft needs 4Clear and Transparent: Plastic bobbins with case have a clear appearance, so you can clearly see when the bobbin thread has run out 5Plastic Material: Bobbins with case are made of plastic material, which is wearable and durable, and can be used with confidence