Miyuki Nylon Twisted Bead Thread is made of 100% Nylon. This thread is pre-waxed, color fast, strong, slightly-stretchy, tangle and fray resistant, and can be knotted tightly and securely. It is similar in thickness to "Nymo-B" and works best with either a size #10 or #12 beading needle. This fine yet strong beading thread is perfect for techniques that require multiple passes through beads, like brick stitch, peyote, loom work, and more. You'll love this tangle and fray-resistant thread, as it's easy to work with and easily threads onto a needle.