Miyuki Dura-Line Beading Thread is a strong and flexible white beading thread made from 100% gel-spun polyethylene. It is one of the strongest fiber cords per diameter. The small (0.12 mm & 0.15 mm) diameter thread will pass easily through a #12 beading needle, making it ideal for projects requiring extra strength or multiple passes through beads with narrow stringing holes. You don't have to worry about beads cutting the thread. It is pre-waxed braided thread that does not stretch and knots easily. 20 m or 50 m spools.