These are 11 m spools of metallic threads made by Kreinik. Use to add a touch of glamour to your design, and to make certain areas stand out. #4 refers to the thickness of the thread ranging from #1 (fine) to #32 (thickest). #4 is the most common thickness and is usually stitched using one strand but be guided by your pattern. We do not carry all of the range but if you don’t see the colour number that you are looking for, please Contact Us and we will endeavour to get it in for you. Note that some of the spools will not be in the bubble packs due to the way the manufacturer sells them.