About This Highlighted instructions for use:This is not an ordinary embroidery thread, be sure to use it as follows, it will give you very stunning results! First point:Embroidery pattern computer plate design of the interline should not be too dense ,refer to the standard of gold and silver thread embroidery plate making. Second point:Computer embroidery should use large size needle, 90/14 needle or 100/16 needle. Third point:Embroidery machine speed needs to be slower than when using ordinary reflective embroidery thread ,recommended speed of 450. Reflective thread features:It is able to reflect light when it encounters light. The colours of the thread are very vibrant, giving you a very large amount of creativity in your work. Because reflective threads are fragile, there are instances of thread breakage before the piece is finished. Overview Material : Polyester Brand : bulingbuling Color : darkblue Item Weight : 64 Grams Item Length : 3.7 Inches Product Care Instructions : Machine Wash Material Composition : 100%Polyester Manufacturer : Velve Unit Count : 1.0 Count