Manufacturer part #: 440. The strength member in WarpSpeed II double braid is 100% SK78 fiber. The cover is a flexible 24-strand ployester. Size Diameter Weight Per 100 ft Weight Per 100 m Strength Average American Metric American Metric 1/4 in 6 mm 0.025 lb 2.4 kg 5,100 lb 2,300 kg 5/16 in 8 mm 0.05 lb 4.5 kg 6,200 lb 2,800 kg 3/8 in 9 mm 0.070 lb 5.7 kg 9,800 lb 4,400 kg 7/16 in 11 mm 0.100 lb 8.6 kg 14,000 lb 6,400 kg 1/2 in 12 mm 0.135 lb 12.2 kg 21,000 lb 9,500 kg Please note that the 3/16" diameter is not spliceable due to its parallel core construction. All strengths are for spliced ropes unless otherwise noted. 10% 20% 30% 0.44% 0.62% 0.79% After 50 cycles at % of break strength. A great strength-weight-stretch profile (high strength, low stretch, and very low weight) makes WarpSpeed II® the high-performance racer's choice for double braid ropes. The strength member in this double braid is 100% Dyneema® fiber. The cover is a flexible 24-strand polyester that provides good handling, excellent performance in stoppers and clutches, and enhanced abrasion resistance. The cover can be stripped where desired for greater weight savings. WarpSpeed II® is beige with tracers and matching cores available in black, red, blue, and green. WarpSpeed® White has an all-white cover with a blue core, or in white with tracers and matching cores of red, blue, and green.FEATURES Enhanced creep properties. Excellent abrasion resistance. Extremely low stretch. Lightweight. Very low creep. APPLICATIONS: Club Racer. Maximum-Performance Racing. Performance Cruising. Halyards. Mainsheets. Spinnaker Sheets. Jib/Genoa Sheets. Spinnaker Guys. Control Lines. CONSTRUCTIONCore-dependent double braid. COVER24-strand polyester with 3-ends per carrierCOREDyneema® fiber with Samthane coating that matches the tracer color SPLICE/CLASSDouble Braid Class II Specific Gravity 1.2