When it comes to knotting and macramé, Micro C-lon is dreamy. Each spool of Micro C-lon Cord has 320 yards....quite the bargain! Also fabulous for macramé and general stringing, C-lon Cord is a substantial, nylon thread with tooth, so it keeps a knot. Each C-Lon spool has 86 yards. Micro C-Lon is comprable to Tuff #1. C-Lon is close in size to Tuff #3. There are some differences between the two brands: Tuff Cord is stiffer and it rarely requires a needle for threading. Micro C-Lon and C-Lon come in a wider range of colors and have a "threadier", softer feeling. Color dye lots can vary and so can the color representation via your computer screen. We do our very best to accurately match the true colors of the cords.