Suitable for sewing machines with automatic winding function, and also suitable for most sewing machines. Such as HAITRAL Brother, Babylock, Janome, Kenmore, Singer etc. But NOT suitable for the Singer Futura Embroidery machines. And it can be used for a variety of sewing projects. What You GetCome with 36 pcs different colors sewing thread spools, 36 pcs different colors prewound bobbins in a box. Bright and vibran, meet the requirement of projects needing variety of colors. High-Quality Material100 Polyester thread, sturdy and durable, it will not be fraying, breaking and tangling up easily. 360 Yard each spool. The bobbins are made of the sturdy plastic that will be not easily broken during shipping. Bobbin SizeClass A, Class 15, each bobbin has 40 yards of thread. Suitable for sewing machines with automatic winding function, and also suitable for most sewing machines.Such as HAITRAL Brother, Babylock, Janome, Kenmore, Singer etc. But not suitable for the Singer Futura Embroidery machines. And it can be used for a variety of sewing projects. Widely UsedIt can work well on various automatic winding sewing machines. Using these sewing threads, you can sew original and personalized clothing to meet your own fashion design needs or change your home with new decorations, such as pillows and curtains.You can add embroidery details to. Perfect GiftIt is a perfect gift for your friends and family. With these sewing threads, you will complete your DIY sewing easily.