Shimano Ultegra 6701 10-speed chain, made for Shimano 10 speed cassettes. The Ultegra 6710 10-speed chain has been completely re-designed. The Ultegra 6701 10-speed chain can only be installed one way. The Ultegra 6701 10-speed chain is unidirectional. The flattened side which contains text is specifically designed to change gears and feel smooth as butter. The links of the Ultegra 6701 10-speed chain are machined to save the necessary weight. The chain is easy to install using the supplied connector pin.
Note: the Shimano Ultegra 6710 10-speed chain is only suitable for cranks with two front chainrings (Double & Compact). For a triple crankset the 6600 chain is recommended.