The 12mm arborist climbing rope has a tough and durable 16 strand polyester cover making the rope a better abrasion resistance with easy grip and knot-holding capability. Spliced loop available. Diameter 12 mm Tenacity 36 kN Tenacity With Knots 20.8 kN Impact Force 5.7 kN No. of Falls 20 Elongation 4.1 % Shrinkage 2 % Sheath Slippage 0.4 % Sheath Percentage 63 % Weight 100 g /m Material PA / PES