Description: The edge of the transparent sewing machine spool is smooth and shiny, and the thread will not break easily when winding. The transparent window can accurately find the spool and bobbin you need, which is very convenient. Double lock design, very waterproof and excellent sealing. The sewing thread box with tight closure provides enough space for 42 overlock cones and prevents the spools from tangling. Features: Material: PP Color: Transparent Size: 23.7 x 13.7 x 6.6cm Packing List: 1 × Box Empty Wire Storage (Box Only) Note: The data is manual measurement, please allow an error of 1-3cm. Due to the difference between light and screen, there may be color difference