... per color. 4.eco-friendly,recycled A. Detailed descriptionsOpen End recycled cotton yarn is recycled cotton blended with recycled polyester ... wick ,jean cloth, suitcase belt, shirt cloth, hammock, canvasC. Shape of the bobbinThe types is 17cm or 17cm or 9cm ... No special requirement the shape is cylinder bobbin. Conical cone is avialable.D. Technical InformationThe technics is Open End .Also call it ...