Salsa Shimano 8/9/10/SRAM 6-Bolt Disc Bicycle Rear Hubs
About Salsa - "At Salsa, we believe a sense of adventure makes life better. The bicycle can be so much more than just a bike; it's a path to new places, new people, and amazing experiences."
The cassette body type is the type of cassette and number of speeds the hub will accept.
This should correspond to the type of brakes you have on the bike.