THREAD SPOOL: Features one 300 yard spool of 50-weight thread made from two plies of polyester SEWING THREAD: Sew Complete is a 50-weight (standard sewing weight) poly-wrapped poly core thread Created specifically for crafting, general sewing, and home decor sewing. Strong yet fine, your machine will enjoy smooth stitches Sew Complete is a 50 wt. (standard sewing weight) poly-wrapped poly core thread which has been created specifically for crafting, general sewing, and home decor sewing. Strong yet fine, your machine will enjoy smooth stitches with Sew Complete!