Specification: Material: Plastic Weight: Approx. 176g( 6.2oz ) Product Size: Approx. 14.5x12x2.5cm( 5.7x4.7x1.0in ) Package List: 1 x Bobbin Storage Box 36 x Bobbins with Thread Features: This storage box is a transparent design, so you can see the contents without opening it. 36 cells can hold many small objects. The small size allows you to easily carry it wherever you go. Note: 1.Please allow 0 to 1 inch 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. Features Premium Material: Made from high quality plastics, it is durable, wear resistant and can be used for a long time 36 Grids: This bobbin case contains 36 grids and has a large capacity to accommodate 36 bobbins with thread Transparent Design: The transparent box design allows you to intuitively find the bobbin you need from the outside for easy use Easy to Carry: Small size, light weight, small and portable, beautiful and practical, long service life Convenience to Use: The bobbin can be placed directly into a small grid for easy storage and is suitable for most sewing machines