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A smooth clipping rope for a hard redpoint ascent or onsiting at your limit. The BiColor Nano is basically a thinner version of the Ion 9.4, with a lower weight per meter, and is a great choice for hard sport climbing, with a nice soft catch. It offers all the same great attributes as the standard with the added comfort of a pattern change in the middle. The low impact force dissipates more energy, which makes the BiColor Nano also great for single line ice climbing.