The shimano ultegra 6700 10 speed road cassette is a lightweight 10 speed cassette with rigid alloy sprocket carrier for reduced weight and better shimano shifting performance even under the most demanding of gear changes the shimano ultegra 6700 10 speed road cassette features hyperglide sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear wide gear range to meet the demands of all types of rider weight 208g 1