12 Pcs Bobbins Sewing Thread kit for Hand and Machine Sewing 12 Colors Spools 100 Yards Polyester Thread Prewound Bobbins with Case

["12 colors, approximately 100 yards per color spool, packaged in paper boxes.","Soft, smooth, and sturdy thread, easy to use, not easily worn, broken, or tangled.","12 carefully curated colors cover basic sewing needs, from classic black/white to vibrant hues.","Prewound Bobbins Compatible with most sewing machines, suitable for a wide range of sewing projects.","Time-Saving Ready-to-Use Design.Factory-pre-wound bobbins save 30-50% thread-winding time compared to empty spools, ideal for quilting/projects requiring frequent color switches."]