So Fine Thread 550yd White #401

So Fine! #50 is a lint-free, extra smooth even twist, all-purpose #50/3 filament polyester. Due to its fine nature, So Fine! #50 is an excellent blending thread commonly used for top stitching applications when the fabric or backing design is to be more prominent than the quilting. So Fine! #50 also makes a wonderful bobbin thread. Ideal for quilting, general sewing, clothing construction, and serger.