Here's a very nice threadless Dark Aqua spool (on the right in the photo) that is 2 3/4" tall x 2 1/2" wide! These were likely used on special pins like the BELco spools as they are noticeably larger in dimensions and the pinhole is a lot bigger (1 1/2" wide!) than the typical spool used on a rack. This example is likely an unembossed CD 1110 B.E.L.Co. Excellent condition.

First email gets this cool spool for the final reduced price of only $50 plus shipping. Thanks!