Winds Yarn: Knit Picks Ball Winder helps you transform yarn hanks and skeins into compact center-pull cakes that sit nicely while you knit and crochet Quick Assembly: To use the Knit Picks Ball Winder just attach to any table edge or surface up to 1-1/2" thick, twist on the spindle, position the guide arm and start winding Simple to Use: The Knit Picks Ball Winder easily winds up to 100 grams or 3.5 ounces of yarn; from lace and fingering weights to worsted and bulky weights