• 【A Great Colorful Collection】Our sewing threads kit includes 36 most popular colors, that are the 36pcs sewing thread spools and 36pcs prewound bobbins. These are the most popular colors you will need from sewing apparel crafts to home decor. So enjoy the benefits of our vibrant colorfast thread, enjoy the convenience of bobbins that have already been wound for you. Please note: actual color may vary from picture due to computer setting. • 【Durable Sewing Material】Our sewing thread spools are made from 100% polyester. Our polyester offers outstanding durability, colorfastness, so the stitches will last long. Also, done with lubrication to make these easily pass through the fabric or leather with little friction. Extremely strong and it will not be breaking or fraying during sewing the fabric. • 【Wound On Bobbins】Size A , wound on class 15 plastic bobbins, approx 54 yard thread each bobbin. If you are done with our prewound bobbin, you can rewind the bobbin on your own sewing machine. It is reusable and very convenient. Thye are compatible with most home machines like Brother, Babylock, Janome, Kenmore, Singer etc. But do remember it does not fit for singer Futura. • 【Wide Application】 This type of thread is appropriate for many purposes. They are suitable for sewing knitted, woven, or leather products. It works well on various automatic winding sewing machines. Once in a while, you could sew something new and design some sewing crafts when that design idea pops up once in a while. It is nice to buy this kit and store one set of our sewing thread at home. Good for small hand sewn jobs.