This narrow sewing elastic thread from Porta Craft is highly versatile, and is ready for immediate use in a sewing machine. It comes in a 20 meter spool, and can be used for shirring, ruffles or to stabilise particular parts of a project. This Shirring Elastic can also be used for crocheting or knitting projects. Note: The width of this elastic determines it tension or strength. Use narrow elastic for light tension and wider for heavier tension. For tangle-free hand sewing, cut the thread in lengths, no longer than 18' (45.5cm). Anything longer may twist itself and form knots. You can shop the full range of Porta Craft General Haberdashery products right here at Discount Craft online today. Features 0.5mm wide 20 meters in length Black in Colour Sold as a single spool