Easy to useThe wool winder holder transform loose yarn into immaculate, well-kept balls.The yarn ball winder doesn't need to assemble and they easily attach to any table or countertop without leaving damage InstructionsInstall the winder on the desk, tighten up the button to fix it, and let loose yarn though the rotary wheel, end up a beautiful ball Perfect fixationBuilt-in table clamp allows it to be firmly fixed at the edges of tables, chairs, benches, or any other convenient locations. Heavy duty construction paired with elegant design and functionality. Light weight, Low noise, convenient and portable. The wool winder holder can get your knitting and crocheting supplies organized easily. Material: Plastic , Metal , Size: 24.5x14.5x15CM/9.65x5.71x5.91inch Package Includes: 1 Piece Yarn Ball Winder : Please allow slightly difference due to manua l measurement. Color may be slightly different since different monitor. Thanks!