They are produced from a new improved nylon: the amount of crystallinity of the string is optimized and there is a perfect link between the molecule. Thanks to high-tech methods, we can produce a top quality clear nylon string, as transparent as crystal whose intonation is perfectly true. This nylon is not rectified by mechanical way in order to keep a smooth surface on it. This new nylon is a great success and a real improvement in clarity of sound. Specifications: