Tired of your spools tangling and unraveling and making a mess? Wrapping Wonder Guard snugly around your spools tidies loose threads and stops it from unwinding and tangling. It also keeps your thread clean and prevents it from drying out. This multi-purpose thread guard can also be attached loosely around spools of thread while in use on a machine for a consistent draw, helping to maintain beautifully even stitches with no fuss. Sizes: Each pack includes 10 sheets. The regular size will fit all regular size thread spools. Choose size small for smaller spools, such as 164yd Efina or 437yd InvisaFil mini size spools.