Winds Yarn: The Knit Picks Ball Winder and Yarn Swift let you transform yarn hanks and skeins into compact center-pull cakes that sit nicely while you knit and crochet Simple to use: Easily winds up to 100 grams or 3.5 ounces of yarn, from lace and fingering weights to worsted and bulky weights Easy to assemble: The Yarn Swift features a simple clamp holds swift in place easily on any table or surface up to 1 1/2'' thick, and umbrella opens up to fit most standard-sized yarn hanks; Ball Winder attaches to any table edge or surface up to 1-1/2" thick; just twist on the spindle, position the guide arm and start winding!