Shimano ultegra 6700 10 speed road cassettethis shimano ultegra 6700 10 speed road cassette is lightweight and durable having been manufactured from rigid alloy engineered with shimanos hyperglide technology you can enjoy an excellent shifting performance even under the most demanding gear changes featuresmaterial alloyhyperglide 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 t