Great for the classroom, these oversized spools of unwaxed thread contain approximately fourteen regular spools worth of 18/3 Colophon’s Best flax linen thread. Available in black. 

Known for its strength, durability, and beautiful sheen, flax linen has been bookbinders’ preferred thread fiber for centuries. Colophon's Best line of linen threads is often paired with natural beeswax for sewing. Spun and plied by Coats Barbour in the EU.

Unsure which thread you need? Sample cards can be found here.

If you’re curious to know more about number system used to describe thread sizes, check out this post by book conservator and toolmaker Jeff Peachey.