Completely redesigned the 1/2 inch BlueWater II now boasts a 3 sigma!! tensile strength rating of 10,280 lbf. This gives it a Working Load Limit [WLL] of 685 lbs.The rope that made us famous, BlueWater II+plus, is the standard for use in caving, rappelling and rescue applications. Its design of double twist cabled sheath strands as well as double twist cabled core strands make it the best all around choice in static/ low elongation ropes. If you require NFPA certified ropes take a look at the SafeLine and ProTac series of ropes Specs: Diameter: 1/2 inch (13 mm) Tensile Strength: 10,280 lbf Working Load Limit (WLL): 685 lbs Weight: 7.4 lbs