Upgraded Yarn Swift for Tangle-free Winding: No more messy yarn or wobbly stands! It features 4 curved arms to support soft yarn stably. Low-resistance shaft and wider clamp make it spinning ultra-smooth without shaking. It perfectly cooperates with most yarn winders to create pretty yarn cakes effortlessly. Ideal for knitting beginners and craft lovers for better creation experience. [Note: No power needed, but pull center button to switch modes; Winder Not Included.] First Electric Yarn Unraveler for Used Yarn Recycling: Featured with electric automatic rotation function, this yarn frogging machine frees your hands from manual repetitive la