Shimano ultegra 6700 cassette chain bundlelightweight 10 speed cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance even under the most demanding gear changes featureshyperglide sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wearwide gear range to meet the demands of all types of riderweight 208g 11 23tchain select from our range of shimano and kmc chainsa 2 year warranty is offere