DURAK Duralon WR is a strong sewing thread made from Nylon 6.6 with water resistant properties. Compared to normal nylon threads it has higher extension values. Duralon WR has high wear resistance, good extensibility and the structural stability is excellent. With these properties it is highly recommended for sewing multi-layered leather goods. OURAK Duralon WR is the best performing water resistant thread for the automotive industry.