The New brothread Glow in The Dark Machine Embroidery Threads set includes 16 colours. Each yarn spool is 139mm in length and 136mm in width. The part type is NB-GITD-16C-US01, suitable for sewing and crafting projects.the reels are all unused . I exposed these under a torch for a few seconds and they do glow so be aware that they are in a box and need exposing to light
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