Save time with Sew Straight by sewing unmarked diagonal lines such as snowball or triangle squares using the re-stickable tabs to attach. Accurately sew bias seams for binding in a jiffy! Sew perfect 1/4″ seams! There are countless ways to use Sew Straight. Made out of thick and durable plastic, this tool is sure to become your go-to for perfectly aligned stitches every time.