All-City Shimano/SRAM 8/9/10; Shimano Dynasys 11 40 Hole Center-Lock Disc Bicycle Rear Hubs
About All-City - "All-City's goal is to make a significant contribution to the equipment and culture of urban cycling. This is not a cash in, this is not a fad, this is our life, our love, our community and our dream. We are a company of riders making products for other riders."
The cassette body type is the type of cassette and number of speeds the hub will accept.
The hub drilling is the number of spoke holes. It must match your rim spoke count.
This should correspond to the type of brakes you have on the bike.