DOUBLE BRAIDED NYLON - Tough, synthetic fibre, with great wet strength retention. Very flexible with high reistance to abrasion. Excellent energy absorption resistant to rot and mildew. 15% less strength when wet, shrinks when wet. Ideal for anchor, dock and fender lines where stretch is required. 3/8" (9mm) BLACK Double Braided Nylon - Coil of 600 Ft. Tensile - 4,800 lbs.