Clover 9524 Stack "n Stitch Thread Tower with Nancy Zieman, quick assembly. Parts included: thread guide, stopper, spool pegs, main body and base. Product size approximately 5 7/8-Inch-by-12 3/8-Inch. Maximum spool size 1 3/4-Inch-by-2 3/8-Inch. Note from Nancy : "For projects using multiple thread colors, such as machine embroidery, I sequentially number the space below the spool pegs with a permanent marker. Then I arrange the spools in stitching order. What a convenience."