This 12mm Braid on Braid rope is a heat-set and pre-stretched polyester rope. 12mm Braid on Braid rope Colour: Black Ideal for mooring, towing, commercial marine applications including winching and arboculture Non-kinking and flexible in all conditions Non floating Weight: 11.7kg/100m Breaking strain: 4,300kg Made in England by English Braids Braid on Braid features: Double braid construction Material: 12-strand core, 24-plait cover Specific Gravity: 1.38 (this means it doesn't float) Resistance to acid: yes Resistance to alkali: yes Resistance to UV: yes Resistance to heat: Core ^400 C, Cover ^230 C Extension at 50%: 5% Extension at break: 25% All our ropes are supplied by the meter, with each end cut using a hot knife. If you require multiple pieces, please add a note to your order with cutting details. Weights and Dimensions may vary. Break Strength: The breaking strength of a rope is the load at which a new rope will break when tested under laboratory conditions. Break strength should not be mistaken for safe working load. Safe Working Load: Because of the wide range of rope use, rope condition and the degree of risk of life or property, it is not possible to make a blanket recommendation for safe working load. It is ultimately dependent on the rope user to determine what percentage of break strength is their own safe working load. Wear: Ropes wear out with use; the more severe the usage, the greater the wear. It is often not possible to detect wear on a rope by visible signs alone. Therefore, it is recommended that the rope user determine a retirement criteria for ropes in their application.