Maxi-Lock is a 50 weight, durable, 100% spun polyester thread with excellent seam strength, consistent sewability, mildew and UV light tolerant, and shrink and abrasion resistant. It is ideal for light to medium weight fabrics, garment making, bedding, and quilting. This package contains four 3000 yard spools of all purpose100%spun polyester thread. Comes in a variety of assorted colors. Each sold separately. Imported.