Stanwood Needlecraft Large Metal Yarn/Fiber/Wool/String Ball Winder, 10-OunceCENTER PULL YARN BALL,our yarn winder creates yarn balls with the string that can be pull from the center, making your knitting sessions convenient and neat. ULTRA HEAVY DUTY, our yarn winder is constructed from 3 millimeter thick steel with rust resistant powder coating to ensure it will stay in place so you can organize your yarns quickly and safely. REINFORCED NYLON GEAR, our specific gears are designed to be both durable and flexible. Tough enough