BLACK 1mm Wax Polished Polyester Twisted Cord Macrame Jewelry String Beading Knotting Thread (20yards Skein) Color: Black Diameter: 1mm Sold per pack of 20-yard skein Great for jewelry making, book biding, shoe making and leather work Wax polished (not sticky & little stiff) polyester cord is much more durable than cotton cord, these cord will not stretch, break or fade easily.