Super narrow lightweight 10-speed directional chain for optimum cassette and chainset interaction and maximum power transfer.Key Features:Chain uses a directional design with specifically shaped inner and outer plates to optimise shifting over the chainset and cassetteOuter plate design has been developed to reduce the chance of chain suckThe inner plate has been developed for better contact with gears giving smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent running5.88 mm chain width, optimised for 10-speed Super Narrow HG drivetrainsWeight 267 grams