A strong, firm, uniformly round rope. Works exceptionally well in blocks and on winches. Does not flatten under load. Has elasticity that allows it to absorb sudden shock loads. Resistant to rot, abrasion, mildew, gas and oil. Sld Brd Nylon -White-1/2 X 250 A strong, firm, uniformly round rope. Works exceptionally well in blocks and on winches. Does not flatten under load. Has elasticity that allows it to absorb sudden shock loads. Resistant to rot, abrasion, mildew, gas and oil.