Industrial sewing machine thread, Vinymo MBT #8, set. 4 white spools, 4 black spools (8 total) All are unused. I purchased these, but they were too thick for my sewing machine, so I stored them unused. - Unused - Thread in good condition - Stored indoors (no direct sunlight) This is a thick thread suitable for thick materials such as backpacks, bags, and Cordura. Recommended for MYOG use, professional use, and as spare thread. *Please check compatibility with your sewing machine yourself. *I am not currently considering selling individual spools (please comment if you are interested).