The Schacht Spool Rack is essential for sectional warping. It will hold up to forty 4″ spools and has a center post that pivots for easy loading and unloading. The center post locks into place during use. While most people use a spool rack for sectional warping, it can handle other studio tasks as well: holding standard yarn tubes and bobbins, providing a place to clamp a swift or ball winder. The spools are made of cardboard and measure 4″ wide with 3″ flanges.