Material: Plastic Color: Transparent Size: 9.8*11.8Cm Package Included: 2 * Sewing Machine Bobbin Box 50 * Bobbin Quantity And Quality: 50 Sewing Machine Bobbins With 2 Plastic Boxes Is Enough Every Day. These Transparent Bobbins Are Made Of High Quality Plastic, Durable And Practical Standard Size Of Most Sewing Machines: Standard Size Can Be Used For Most Sewing Machines, Such As: B. Br Is Very Suitable For Beginners To Use Embroidery Or Sewing Machines Keep Bobbins Organized: Each Bobbin Is In A Separate Compartment And Organized. The Transparent Bobbin Comes With A Transparent Box So You Can View The Filled Colored Bobbin For Quick Access Movable Bobbin: There Are 50 Bobbins Connecting 50 Kinds Of Threads Of Different Colors Together. These Bobbins Can Also Be Used For New Bobbins After Threading Is Complete