This is a wooden yarn winder. I used it once, but I've been using another yarn winder, so I've been storing this one. - Material: Wood. - Size: Approximately 63cm tall. - You use it by tightening the screw on the bottom and clamping it to the edge of a table. - The swift expands like an umbrella when you raise the arms, and you can adjust the size. - It's foldable. Image 6 There's a hole in the center of the bar, but there were no metal fittings or strings attached to this hole; it's part of the original design.