GM CLIMBING 8mm (5/16in) Double Braid Hitch Cord Kevlar & Polyester Specification Diameter: 8mm / 5/16in Weight: 50g/m / 3.36lb/100ft Breaking Strength: 20kN / 4800lbf Sheath Material: 50% Kevlar & 50% Polyester Core Material: Polyester Braiding method: Double braided