For sale is a jumbo size metal ball winder. This super high quality winder is built to withstand heavy use. In comparison to competitors" models, our model has the following advantages: (1) We use special nylon material for cogwheels. They are super strong but make much less noise than the metal cogwheels; (2) Our model does not require tools to assemble; (3) Our frame is painted by electrostatic painting so the paint won"t come off; 4) The edges of this machine are super smooth. It won"t leave any marks on your table. This winder can handle about 10 oz. of yarn, which is 2.5 times of what our smaller winder does. It can be clamped onto a table up to 2 1/8" thick. It is best to be used with a swift yarn winder (Umbrella or Amish style, both available under Stanwood Needlecraft brand names). But you can easily replace a swift with other devices or just simply your arms.