7/16" Samson Amsteel Dyneema line: Dyneema SK-78 (UHMPE) 12-strands, specific gravity= 0.97 (floats), water absorption= zero, abrasion and chemicals resistance= excellent, strength of a 7/16” single line = 19,300 lbs. Combined strength of the shackle = 44,390 lbs. (4x 19,300 reduced to 2.3 x because of the knot linkage) Tuff Weave Nylon 6 sleeve: Complies 033 MSHA IC 359/01 standarts; no damage after 50,000 test cycles, operating temps: -49°F to 248°F, melting temp: 410°F, resists common chemicals, gasoline, salt & solvents, protects from UV damage.