Round Waxed Polyester Cords, Twisted Cord, BlackSize: about 0.5mm in diameter, about 115.92 yards(106m)/roll. ●Material: The thread is made of waxed polyester cord and light wax, which is strong and durable. ●You can use this waxed thread to work at braided bracelet, jewelry making, friendship bracelets, binding, packaging, leather sewing, beading and so on.