Tune 12 mm Thru x 142 mm Shimano/SRAM 8/9/10; Shimano Dynasys 11 Black Bicycle Rear Hubs
This is hub spacing and is the width of the hub. It must match your frame specifications.
The cassette body type is the type of cassette and number of speeds the hub will accept.
We define color as the main color of the item. It may have accents or highlights in other colors.