The cardboard warping spools are a more economical option than plastic spools for those who do sectional warping only occasionally. You will need one spool per thread in each section and a spool rack to hold the spools. This spool's shaft is too large for most single-ended bobbin winders and so requires a double-ended bobbin winder.
Dimensions: 3" in diameter; 3 7/8" long. Shaft opening is 3/8".