Taylor Seville's Thread Magic is the ultimate thread conditioner. Apply this special formula to your thread to strengthen it and prevent tangles and fraying. Thread magic will not melt, freeze, or leave behind a residue, and is safe for all threads, fabrics, and machines. The conveniently shaped container makes it easy to apply the conditioner to threads. 400% Less thread drag and hand fatigue.
The square one contains a thread cutter blade for easy of cutting.
both Made in the USA.