Tachyon features a revolutionary dual-core design with polyolefin inner core strands surrounded by an energy absorbing nylon core. This new Flexifirm Core Technology results in a lightweight 11.5mm climbing line that stays firm and round while permitting spliced eyes in one or both ends of the line using a double braided splice. Works in popular hardware designed for use with 11mm ropes. Tensile strength 3090 kg. Sold per metre.