Summit Treestands 30ft Safety Line Pack of 3 Brown. The safety line with dual prussic's is a 30 foot climbing rope with two prussic knots that allows you to hook in at the ground level and stay connected as you ascend and descend from the stand Specifications for Summit Treestands Safety Line w/two prussic knots: Manufacturer: Summit Treestands Color: Brown Length: 30 ft Quantity: 3 Pack Package Contents: Summit Treestands Safety Line w/two prussic knots Summit Treestands SU83102: 30ft Safety Line 3 Pack