Umbrella Swift Yarn Winder is made of durable plastic. The purpose of this tool is for supporting skeins of yarns of various sizes for winding and balling off hanks of yarn. It has a table clamp with wooden twist screws to hold it in place and spins freely as you wind your skeins on your yarn ball winder (not included). For use with yarn hanks with a 60-inch circumference. Integral handle permits use as a winder, adjustable clamp permits vertical, horizontal, or angled operation. Imported.