DuraThread 50m Spool – Black – New Colourfast Formula (x36) DuraThread's Shop area is only accessible to Wholesale users. Please Register in order to access. Post navigationPrevious post: DuraThread 50m Spool – 48 Spool Multi Pack – White (x24), New Formula Black (x24)Next post: DuraThread 50m Spool – White (x36)