The SherrillTree BackBone rigging connector (Item # 35174) features a retail price of $99.95. The BackBone makes more efficient rigging possible, as a quick connection between your spliced rigging line and slings. Perfect for top-down rigging, as well as single, double, or even triple limb lowering. You can also use the BackBone to create a balancer for precision. (Length : 10-3/4 inches; width: 5-1/4 inches; weight: 3.75 pounds; WLL: 4,600 pounds; tensile strength: 46,000 pounds; metal: steel; and rope capacity:3/4-inch maximum).